a -lt"~±~~~ ~*·ic.:f

Transactions and Proceedings . of the

Palaeontological Society of Japan

New Series No. 18

Palaeontological Society of Japan

June 20, 1955

CONTENTS

TRANSACTIONS

263. lsogramma paotechowe11sis (GRABAU et CHAo) from the Permian of

Japan ........................................................................... Masao MINATO 29

264. Tertiary Mollusca from Taishu Mine, Tsushima, Nagasaki Prefecture,

Japan ........................................................................... Saburo KANNo 31

265. Evolution of Peroniceratidae ................................. Tatsuro MATSUMoTo 37

266. llidaella, r new genus of the Pennsylvanian fusulinids from the Fukuji

district, eastern part of the Hida mountainland, Central Japan ........... .

... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Haruyoshi FuJIMoTo and Hisayoshi IGo 45

267. Spirosigmoili~tclla, a new foraminiferal genus from the Miocene of Japan

........................................................................... Takashi MATSUNAGA 49

PUBLICATIONS RECEIVED (9) ............................................................. ~. ... 51

PROCEEDINGS .......................................................................................... 51

President: Hisakatsu Y ABE

Counciiiors: Kiyoshi AsAr:-;o, Riuji E:-loo (Business and Accountant), Scido

ENoo, Haruyoshi FuJIMOTo (Publication), Shoshiro HANZAWA, lchiro

HAYASAKA, Nobuo lKEUE, Teiichi KoBAYASHI (Editor), Jiro MAKIYAMA,

Tatsuro MATSUMoTo, Masao MINATo, Tokio SuiKAMA, Fuyuji TAKAI

(General Affairs), Hisakatsu YABE.

All Communications relating to this Journal should be addressed to the

PALAEONTOLOGICAL SOCIETY OF JAPAN

Geological Institute, Faculty of Science, University of Tokyo, Japan

Trans. Pro.:. Pal:teont. Soc. Japan. N. S .. No. 18, pJ). 29-30. 1 text-fig., june 20, 1955

263. ISOGRAMMA PAOTECHOWENSIS (GRABAU ET CHAO)

FROM THE PERMIAN OF JAPAN*

MASAO MINATO

Hokkaido University, Sapporo

Isogramma paotechowet~sis (GRADAU et CHAo) 8:<fi:(l)=:~f;e/mi:.Pl-t: ;iiJJII~t.'i,tr·;~~]J,!,:;$:

an!IJJ :ltt1~1ll~iR-c:Jil.Ji!J<I'Ht.E:a:-=!*m L-t.::o:. -{-(l)!:pi.:.~~(l)fil\;6:~. < -t.tt ·n ·t.:.o :::f%~t.dl~*-r't ~~;6:1.·'1::>1,;? (l)lJC~:a:-fi'-?t.:o *filllt~*· :6/iit~~im~ L-cfl!Hs·~~vt:~t.:tl:. -{-(1)~fl::lt=:1:1;~:C. 1:::. ifJiE tt ~"' ~ (, (1) ·{! ~. Q 0 ~ 1Fjfji

Jsogramma paoteclwwensis (GRABAU et CuAo) is a brachiopod characterized by its large size. semi-circular shell form and quite unusual ornamentation of shell surface.

Very lately this species was discovered for the first time in Japan by S. MAE­

KAWA at Hoso-o-zawa, Tukit:-~te-mura.

Motoyoshi-gun. Miyagi Prefecture. The geological horizon of this occurrence is the Lower Kanokura seriesD of the Kita­kami mountains. and is doubtlessly Permian in age.

The writer is grateful to Mr. S. MAF.­

KAWA for his courtesy in submitting his specimen for study to the present writer.

Isogramma paoteclwwe11sis (GRABAU et CnAo)

Text-fig. 1

1928. Aulacorhynclms Jmotechowensis, GRABAU et CHAO: Productidae of China, 2, Pa· laeout. Sinica, Ser. B, vol. V, fasc. III, p.

3:3, pl. 1, figs. 1-5. 1931. Isogramma paotechowensis, AIGNER und

HERITSCII: Das Genus Isogramma im Carbon der SUdalpen. Denkschrijten d. Akad. lVissn!schaj'tell IVien. J.fathem.-Nal. Wiss . .h.?asse, 102, p. 307, pl. 2, figs. 32-36; pl. 3, figs. 37-44; pl. 4, figs. 45-51 ; pl. 5,

figs. 52, 53, 67, 71.

* Read Oct. 1954; received Nov. 2, 1954

1935. Isogramma paotechouJeusis, 1\IETZ: Eine Fauna aus den untersten Schichten des Ohercarbons der 1\.arnischen Alpen. N. ]b. f Min. usw. Heil. Bd. 75, Abt. U, p. 171, pl. 5, fig. 17.

Shell attaining quite a large size. transversely semicircular in outline. Both cardinal and frontal margins of the shell are torn off. but width of shell is estimated to be nearly twice the length: namely, it is 128 mm wide, while it is assumed to be about 64 mm in length. Hinge-line is straight, probably equaling the greatest width of shell, or possibly only slightly shorter. Shell is slightly concave around umbonal region, but is otherwise almost flat.

Cardinal area distinct, about 3 mm high at umbonal region, gradually lower­ing toward cardinal extremities. On cardinal area, external surface sculpture is impressed, which consists of minute punctures with indistinct vertical striae here and there.

Numerous, sharply raised concentric lirae decorate whole shell surface which are almost parallel everywhere to the shell margins, and alternating with rather flattish concave furrows of almost equal width. In these fiat-bottomed furrows very numerous punctures are observed that are generally arranged in

-29-

30 l\bs:to l'viiNATO

Text-fig. 1. lsogmmma paotechowensis (GRABAU et CHAO) x 1. Phot.: S. KtJI\IANo

four rows along concentric lirae. No internal structure observable, be­

cause the specimen is preserved as a mold of an external surface of the shell.

Remarks :-With regard the general outer form, size and sculpture, the spe::.i­men under consideration is doubtlessly conspecific with lsogramma paolccho­wcnsis, described by CnAo, AIGt-:ER and HERITscu and also by Mnz. Formerly CuAo claimed the dorsal valve of this species to lack cardinal area, however, it is not true: AIGNER and HERITScH recognized its presence and illustrated in many figures. The presence of the cardinal area in the dorsal valve is also ascertained in the Kitakarni specimen as above deacribed.

This species was once believed to represent the Upper Carboniferous but not the Permian. However, all of CHAo's specimens were said to have been derived from the Taiyuan formation of North China, so that the age of this species must be now regarded Lower Permian : furthermore, AIGNER and liERJTscH des­cribed this species from the Cora-forma­tion in the Carnic Alps, and accordingly the geological age of this species can not but be Permian.

Besides, the age of the so-called

Waideggerfauna (the so-called Upper Carboniferous fauna) in association with Isogramma paotcclrozccmis described by METZ from the Carnic Alps is also of the Permian age.

The Kitakami specimen also is Per­mian, nnd especially the Early Middle Permian in age, being found in associa­tion with Productus grafiosus, Liuopro­ductus cora, Derbyia gra11(/is, 1\largiui­fera lougispinus. Spidfen'na cristata, etc. Thus, the occurrence wholly coincides with that of the Waideggerfauna in the Carnic Alps. All the associate species of Isogramma in the Kita.kami Mountains were also found by Mwrz in his Waideg­gerfauna in the Carnic Alps.

Loc. :-Hoso-o-zawa. Tsukitate-mura, Motoyoohi-gun. Miyagi Prefecture. Horizot~:-Lower Kanokura Series. Coli.:

S. MAEKAW A. Reg. 110.: 17838. Department Geol. & l\'1in. Hokkaido Univ. Sapporo.

R<'fcrcnl'cS HAYASAKA, 1. and l\1. MINATO (1954): A note

on the Carboniferous and Permian faunas

of Japan. ]o111·. Foe. Sci. llokkaido Univ .. vol. 8.

-- and -- (1954·a): The Palaeozoic of

Japan. Comptes rendus de Ia Dix-Neuvii'me session, Alger 1952, Sectioll XIII, Fascicu/e XIII. p. 193.

Trans. !'roc. l'alaeont. Soc. Japan, N. S., No. 18, pp. 31-36, Pl. 6, l text-fig., june 20, 1\!55

264. TERTIARY MOLLUSCA FROM TAISHU MINE, TSUSHIMA,

NAGASAKI PREFECTURE, JAPAN*

SABURO KANNO

Tokyo University of Education, Tokyo

~.!13. ::CHIIDt.lll~ it'ft:rii.:"':JI. ,-c: ~~q;;:.C~1i!~llli1· ~~f*m~tt.t:: iHt:rillH:~iM L t.:~i:lr: 14 00 ~fiij5E Lt.:. -t"->~.:W:.::.tt.tC>Mt:rilif~*tr~~n:-'}~ :1J-*: tC>:tvn 't.: J.: 'J t7li < MVrtltilM H.: It rrfiiltf.liJIII"-> t "->"{!~~.::.c. a-rotf,;i Lt:. *lllE~f!&

Introduction

Through the kindness of Mr. I. SAGA. geologist of the Toho-Aen Company, the writer had a chance to study the mol­luscan fossils collected h·om the Taishu Mine in Sasu-mura, Tsushima Island, Nagasaki Prefecture. Japan.

\Vith regard lo the geology of the island. there arc three reports, namely, by T. NASA (1891), D. SATo (1908) and I. TATEIWA (1934). T. NAsA pointed out that the island consists e;osentially of disturbed alternating beds of shale and sandstone intruded in places by granite. quartz-porphyry, porphyrite etc. These rocks. he stated, show resemblance to the Jurmsic series of Central Japan. However. he found no fossils. D. SA-ro divided the strata into Lower and Upper. The former occupies the northwestern part of Kami-shima and the latter the remaining part of the island. Their boundary extends northwesterly from \Vaniura to Inugaura. From lithologic similarity, he compared the beds with the Mesozoic rocks of southwestern Japan. and with those of south Korea. Although he recorded the occurrence of the mollus­can and plant remains, no definite age was

* i{ead. Ocl. !J, 1954; received Nov. 7, 1954

31

ascribed because of their bad preserva­tion. I. TATEIWA collected a small flora from a dark grey shale expoEed on a roadside cutting near the village of Kotsuki in Shimo-jima and from a similar shale rear the entrance lo the village of Saka in Kami-shima. From the flora which comprises 16 forms of plant leaves, he determined its geological age to be Cretaceous- Paleogene.

Such being the state of our previous knowledge on the geologic age of these beds, the present fauna is considered to have important bearing on the problem.

The writer wishes to express his gra­titude to Mr. I. SAGA. geologist of the Toho-Aen Company, for kindly offering his collection for examination and for oral information concerning their geolo­gical occurrence, and to Drs. Haruyoshi Fun~loTo and Kotora HATAJ, both of our Institute, for their constant guidance during the course of the present work.

Fossil localities and occurrence

The Taishu group (TATEJWA, 1934), generally speaking, is an alternation of dark grey sandstone and black or dark grey slaty shale, each having a thickness of about 10 em. /\nd there often is a ripple mark between the sandstone and the shale.

32 Saburo KANNO

Text-fig. 1. 1\laps showing the locality.

So far to date. fossils have been hardly reported from Tsushima excepting plant and a few fragmental molluscan fossils. However, molluscan fossils were dis­covered in 1953 by I. SAGA from in the Shintomi-pit and Himi-pit of the Taishu Mine (Text-fig. 1). The fossils were derived from a one meter thick shale intercalated in the alternation of sand­stone and shale. The shale, although massive, appears as a breccia in con­taining a number of angular pumice, quartz-porphyry and porphyrite.

The 14 species which are each re­presented by only one or several indivi­duals ·were obtained from the Shintomi­pit. The shells are rather well preserved but are impregnated with pyrite in part.

The distinguished forms arc : 1. Acila (s. s.) sp. A single fragment. 2. Nucula (Lamellinucu/a) cf. hizcncnsis

NAGAo .. . .. .. . .. .. .. .. .. .. . Pl. 6, Fig. 1. A single fractured specimen.

3. Anadara sp. A single fragmentary specimen .. .. .. .. . .. .. .. .. .. .. . Pl. 6. Fig. 2.

4. Chlamys ( Coralich/amys ?) cf. rutteni

l'VlARTIN

5. Patinopectcn kimurai (YoKOYAMA)

6. Cyrena aff. mirabilis NAGAO ... Pl. 6, Fig. 9. A single specimen.

7. Lucinoma sp. A single fragmentary specimen ........................ Pl. 6, Fig. 10.

8. Venericardia cf. yoshidai NAGAO... .. . .. .. Pl. 6. Fig. ll.

9. Meretrix aff. pseudomeretrix NAGAO .......................... Pl. 6, Fig. 12. A single specimen.

10. Dosinia cf. chikuzenensis NAGAo

11. Telli11a sp.

12. Phaxus aff. izumoensis (YoKoYAMA)

13. Euspira cf. ashiyaensis (NAc;Ao) ....................... Pl. 6, Fig. 17. 1JI pres;!rved specimen.

14. Neverila insig11is (NAGAO) A single specimen .................. Pl. 6, Figs. 18a-b

Geologie age of the Taishu fauna

T. NAsA (1891) considered the beds in question to be Jurassic in age from their lithologic resemblance to the Juras­sic :;trata of Central JaJ)an. D. SATo (1908) claimed them to of Mesozoic

Tertiary lVIollusca from Taishu !\line, Tsushima, Nagasaki Prefecture, Japan 33

because of their lithologic resemblance with the 1\Iesozoic rocks of Nagato, southwestem Japan. and with those of south Korea. However, I. T ATEIW A (1934) pointed out that the beds, from their plant fossils and stratigraphic con­sideration. are of Cretaceo· Paleogene age. So far as the flora is concemecl. a Lower Tertiary age seems possible. but he was inclined to regard the beds are rather old owing to the stratigraphic relation of them to the rocks that intruded beds. These intrusive rocks are probably con­temporaneous with the eruptive rocks of the Bukkokuji group of south Korea, whose eroded surface is covered by the Choki series which contains a Paleogene flora of the so-called Arctic Miocene type.

The present molluscan fauna, although inadequate for discussing the chronologi­cal age, is important in that there is no evidence for a Cretaceous age. The molluscan fauna is similar to that of the Paleogene Ashiya group in northern Kyushu, Japan. However, Patitwpccten kimurai (YoKoYAMA) and the genus Dosiuia are dominant elements in the early half of the Miocene in Japan. The plant fossils reported by TATEIWA

seems to be of Tertiary age. Therefore. the writer concludes that the geological age is late Paleogene or early l\'lioccne. However. it must be kept in mind that the age is restricted to the fossiliferous beds and not to be the whole. There­fore, it may be added that detailed strati­graphic work is necessary to clear the problem existing between the fossilifer­ous beds to the geology of the island.

Systematic Description

Familr Pectinidae

Genus Chlamys RontNG, 1798

Clllamvs (Corali'chlamys ?) ct. rut/cui IVfARTIK, 1914

Plate 6. Fig. 3

1952. Chlamys (Coralichlamys?) mltcui l\IIZUNO.

Trans. Proc. Palaeont. Soc .. Japan (NS.). 110, 6, pp, 188-189, pl. 17, fig. 6.

A single right valve. It is broken at its umbonal and postero-dorsal parts, and measures 6.0mm in length and 6.4mm in height. This specimen has a small shell and more than twenty narrow radial ribs which are separated by broader interspaces.

Genus Patinopecictz DALJ., 1898

Patiuopcctcn kimurai (YoKoYAMA), 1925

Plate 6, Figs. 4-8

1925. Pecten kimttrai YoKOYAI\IA, four. Col/. Sci.. Imp. Utziv. Tokyo, IJO/. 45, art. 5, p. 27, pl. 4, figs. 1-6, pl. 2, fig. ·1.

Shell large, orbicular, more or Ieos compressed. subequilateral. the antero­dorsal margin being slightly longer than the posterodorsal. Surface with radial rits. Right valve with eight radiating ribs with no longitudinal riblets or striae on their backs, separated by f'hallow valleys of about equal breadth which are smooth at bottom and show no demarcation against the ribs. Ears sub­equal, the anterior one smaller, triangu­lar in outline with its anterior border somewhat convex; byssal notch hardly developed ; posterior ear also triangular but gently curved from the hinge.line to the posterior border. Isolated left Yalve3 which probably belong to the same spccie3 are less convex. provided with fi11e network. granular ornamenta­tion and radial ribs; ribs about eight in number, roof-like, sharp, with valleys

34 Sahuro KANNu

equally formed, that is to say broadly V -shaped : ears suhequal. triangular. pro­vided with a few radiating riblets. Hinge-line nearly straight but oblique. The largest specimen (fig. 4) is 81 mm in height, about 80 mm in length and 36 mm in length of hinge-line while another (fig. 5) measures 20 mm in height, 20.5 mm in length and 9 mm in length of hinge-line.

Remarks :-The specimens resemble Patitzopecten llimurai (YoKoY AI\ I A) (1925) from the Jo-Ban Coal-field, but diverge therefrom by having no radial striae on the ribs of the right valve, and more elevated and rigid ribs. P. murayamai (YoKoYAMA) (1926), is also similar but is distinguishable by having equilateral valves. and in having the right and left valves nearly equaL P. kimurai ugocnsis HATAI and NtstYAMA (1940) differs by having subequal valves. no strong radial ribs and smaller shells. P. kimumi tiganouraensis NAKAMURA ('1940) is dis· tinguishable by having a less number of ribs which are gently elevated and broadly rounded. P. kyushucusis (NAGAO)

(1928) from the Paleogene of Kyusllu, Japan. is somewhat akin but has nume­rous ribs. Therefore. the present speci­mens may represent a new form. How­ever, the state of preservation does not permit establishing a new name.

Family Veneridae

Genus Do~inia Scopof.l, 1777

Dosinia cf. clzikuzcnettsis NAGAo, 1928

Plate 6, Fig. 13.

1928. Dosi11ia cllikuZi!IICIISis NACAo, Sci. R1~p.,

Tohoku Imp. llniv.. 211d ser.. rot. 12, 110. 1, p. 64 (5·1), pl. 10, fig;;, -1-7, 9.

Although the single specimen at hand

is more or less compressed, it resembles the paratype (fig. 14) of the named species figured by NAGAo from northern Kyushu, Japan. Dimensions: 39.8rnm in length, 38.1mm in height.

Family Tell inidae

Genus Tellitla LJNNf:. 1758

Tel/ina sp. inclet.

Plate 6, Fig. 15.

Shell of moderate size. compressed, transversely elongate-ovate in outline. Antero-dorsal margin fairly arched. pos­tero-dorsal marigin straight with an in­distinct excavation behind the umbo, and forming an angle of about 1<15° with the antero-dorsal. Anterior end evenly rounded, the posterior one ros­trate and subtruncate: ventral margin broadly arcuate. Umbo small, pointe::!, inconspicuous. Surface with crowded, narrow and incremental concentric lines. Test thin. Hinge plate and teeth un­known.

Dimcnsiou :-34 mm in height anp 54mm in length.

Remarks :-The single left valve is somewhat similar to T. maxima NAGAO

(1928), but differs by having a more cornpre...~ed shell, more rotmded anterior end and rostrate posterior end. It is also similar to the T. sp. figured by NAGAo

(1928) from the Kiuragi Mine, northern Kyushu, Japan. ~ince the Kiuragi speci­mens are both right valves. precise comparison between these two forms is difficult, but the writer holds the view that these two forms may prove to the same specimens.

Family Glauconomidae

Genus Phaxus LEACH, 1852

Tl'rtiary Mollusca from Taishu Mine. Tsushima. 1\:agas•Jki Prefecture, Japan 3;>

Plwxus aff. iz11mocnsis

(YoKOYAMA). 1923

Plate 6, Fig. 16.

1923. Cultcl/us izumoensis YoKOYAMA. ]ajJan. ]our. r:co/. (;cogr .. vol. 2, p. 5, pl. 2. fig. 1.

1925. Culte/lus izumoensis YoKOYAMA. ]our. Col/. Sci., Tokyo Imp. Univ., vo/. ·15, art. 6, p. 18, pl. 5, figs. 2, 3.

1928. Cultel/us izumoensis NAGAo. Sci. Rep. Tohoku Imp. U1ziv., 2nd ser .. t•ol 12, 110.

1, p. 82 (75), pl. 4, fig<l. 1-4.

One specimen. It resernble3 Cultel/us sp. aff. C. izumoe11sis YoKoYAl\IA, tlgurcd

by NAGAo (1928) from the Paleogene

formation of Kyushu. However. our

specimen is not well pre...~rvecl and is

represented by an external mould. There­

fore a more precise comparison with

NAGAo's specimens is rendered diflicult.

Heferences

ARNOLD, R., ( 1906). Quaternary and Tertiary Pectens of California. Prof. Paper, U. S. Ceo/. Sun1., 110 . ..J7, pp. 1-146.

RATA!, K. :md NIS!YA"!\fA. S .. (1940), Paleon­tological Notes on Certain Japanense Scal­lops. four. Geol. Soc. ]ajJan, no/. -16. 110.

544, pp. :i7-46.

MATSUSIIITA, H., (1949), Stratigraphical Stud­ies on the Paleogene in Northern Kyushu (in Japanese). Sci. Rep., Fac. Sci., l(vushu Univ. Geol .. t•ol. 3, 110. 1.

l\1IzuNo, A., (1952). Des::ription of the Paleo-

gene l\lollus:a from Sakito, Nagasaki Pre­fecture, Jap:m. Trans. Proc. l'alaeollt. Soc. fapau (NS.). vol. 6, pp. 185-193.

:t\AGAo, T .. (1926), Stratigraphical Studies on the Paleogene in Kyushu, Japan (in Japanese). ]our. Ceo/. Soc. Tokyo, t:ol. 38, 110 .. f.ffj, pp. 115-130, 110 .• J.J7, pp. 263-269, 110 .. J.J8, pp. 317-323, JIO. 449, pp. 363-:~73. 110. 450, pp. 457-460. 110. 452, pp. 596-603, 110. 453, pp. 663 ·671.

--. ( 1928:~), Paleogene Fossils of the Island of Kyushu. Japan, Part I. Sci. Rep., Tohoku Imp. llniv., 2nd ser., vol. 9, no. 3.

--. (1928b). ibid, Part II. difto.,vol. 12,110.1. NAKAMtmA, 1\1., (1940). On Some Pectinidae

Fossils from the Miocene Deposits of the Tomiya Block. Japan. jour. (;eo/. Geogr., I'Of.

17, IIOS. 1-2. NASA. T. ( 1891 ). Report on the Reconnaissance

Geological Survey of :t\agasaki Prefecture. Japan (in Japanese). Bull. Imp. Ceo/. Sum, ]apau, 110. 1.

SATO, D .. (1938), Geological 1\lap of Shimo­gata and Its Explanatory Text (in Japanese). Imp. nco/. Surl'. Japan.

--. (1913), On the Topography and Geology of Tsushima (in Japanese). jour. Geol. Soc. Tokyo, vol. 25, 110. :wo. pp. 855-865.

-. (1914), ditto., ibid., vol. 26. 110. 302, pp. 114-123.

TATF.IWA, I., (1934), Cretaceous Flora of Tsushima, Japan. ]apa11. jour. Ceo/. Ceogr., vo/. 11. 110s. 3-4. pp. 185-209.

YoKoYAMA. M .. (1911), Some Tertiary Fossils from the Miike Coal-Field. jour. Coli. Sci., Tokyo Imp. Uuiv., vol. 27, art. 20.

--. ( 1926). Fo~sil Mollusca from the Oil­Field of Akita. jour. Fac. Sci., Imp. U11iv. Tokyo, sec. 2, vol. 1, pt. 9.

36 Sahuro KANNO

--------------~--- ~-~~- ------

Explanation of Plate 6

(All figures in natural size unless otherwise stated)

fig. 1. Nucula (Lamelimtcttla) cf. hizmensis (NAGAO) x3

Fig. 2. Anadara sp. Fig. 3. Chlamys (Coraliclzlamys ?) cf. rutte11i MARTIN x 5

Figs. 4-8. Patinopecten kimurai (YOKOYAMA) Figs. 4-6. Right valve. Figs. 7, 8, Left valve. Figs. 5-8, Plastotype. Fig. 6. Deformed specimen.

Fig. 9. Cyrena aff. mirabilis NAGAO x 3 Fig. 10. Lucinoma sp. Fig. 11. Ve11ericardia cf. yoshidai NAGAo. (Cast) Fig. 12. Jllferelrix aff. pseudomeretrix NAGAo x 3 Fig. 13. Dosinia cf. chikuzeuensis NAGAO Fig. 14. Dosinia chikuzenensis NAGAO. A paratype figured by NAGAO from Chikuzen, northern

Kyushu, Japan. x 0.8 Fig. 15. Fig. 16. Fig. 17. Fig. 18.

Tel/ina sp. Plwxus aff. izumoensis (YoKOYAMA), Plastotype Euspira ct. ashiyaensis (NAGAo)

Neverita insignis (NAGAo)

KANNO: Tertiary Molluscs from Tsushima PLATE 6

7

~

Photo. by S. AoKI

Trans. Proc. Palaeont. Soc. Japan, N.S .. No. 18. pp. 37-44, :~ text-figs .. I table, June 20. 1955.

265. EVOLUTION OF PERONICERATIDAE *

TATSUJW MATSUMOTO

Department of Geology, Kyushu University

Peroniceratidae Q:>j'iiift.: Senonian Q:>'llt~t.d\i1'iM Peroniceratidae 1.: -::>\. '-c (t, Cor. LIG sos (1948) Q:>'?.!t,f,(J~t~-tOt.f.:Uit~iJ:;t;,~o L:b· L.lr;V)f**tt 1'1 *Q:> i Q:>l.:lt J: < ;t;,-c lt. j: tJtJ:\. 'R,iJ:;t;, -!>o .:.mf~~t.:·tr-~-c. ~ l?l.:~l:§fiiH.:-::>t'-c~ir.JLt.:~.'i*· lfirLt'5HI'[*~iffil:flJ.I?;!Lf.:o :;$:f'!.Q:> Jnlt.l!!J;::. -::>1, •-c It, Collignoniccratidae Q) Subprionocyclus (Turonian) c WH®§I.:f.liV:-:> < -·lff'~t:"ii.'e.\1.>, ~!Iii. Prote:mniles :a-Wili'l Lf.:o .:.hit Te.r:anites ~i!1j; < 0 fl:;f>:li[Q:>; 't;,, amakusense = fukazawai t nomii 11 Prolexanites Q:>~111J~q:> i q:>-~. 7' 7 !.1 -JJ V) T. soutoni (~ 3 El3) (iilij~Q:>*r,mm l.::il(l. 'o orientale It 7' 7 IJ 7J Q:> umkwelanense (~ 2 f:l:l) t t i 1.: Paratexauites ·c:, Parabevaililes ( "J\.,·C:

Beval!ites) ~m~ . .:.;tlt.:>(i Protexanites-Tcxanites *c11'~rrt¥.rcli,J.., (~~ 1 f:l:l~·HiOo A;;:~Ht

Coniacian I.:~,J.i5{(1.:7.Ht. L, 3jdtf~il;3E1l [.., .!:J!iit.~iffi L, Campanian rl•l!tl.:lrollila~Q:>ll!W(tJ:;f., 7.> 0

J;J,J:Q:>jl!iff:..!iJ!(!~)(~; 1 *1.:1~fJ~.tt-7.>o ;ID :$: it flB

Foreword

While I was studying the Cretaceous animonites of Japan and South Saghalien, General M. Cor.LIGNON (1948. a,b) publi­shed a magnificient monograph on the " Texanitidae " of Madagascar and gave a review on the Japanese forms in the appendix of that paper. Indeed his work is comprehensive and has much advanced our knowledge, but I cannot agree with him in some of his remarks on the Japanese forms. With a doubt kept in my mind J visited London in 1953-54 where I fortunately had an op­portunity to study some foreign speci­mens. As a result of the study I ha,·e obtained a new idea which is not only satisfactorily applicable to the Japanese forms in question but also interesting to the problem of the evolution of Pero-

* Read Dec. 19, 1954; received Nov. 15, 1954.

37

niccratidae, one of the important am­monite families in the Upper Cretaceous.

As to that problem Mr. C.W. WRIGHT expressed his opinion (1952, p. 221 and fig. 2) that Peroniceratidae HYATT, 1900 ( =Texanitidae CoLLIGNON, 1948) has its origin in some Collignoniceratidae WRIGHT & WRIGHT. 1951 (=Prionotropi­dae HyATT, 1900). through Garethieri­ceras. This might be a possible source but in my opinion there is another alternative which seems better for at least some of the members of Peronice­ratidae.

As I intend to monograph the Japanese Peroniceratidae at some later opportunity I present here concisely the facts which I have noticed and an opinion which can be developed from them.

I should like to dedicate this short paper to Professor Seitaro Tsuuoi who has encouraged me with an instruction that Japanese geologists and palaeon­tologists should contribute something

Tatsuro MA TSU l\10T< J

new to the intemational scientific pro­blems from the study of the material in the mother nature of Japan.

I acknowledge here my heartfelt thanks to 1\lr. C.W. WRIGHT who has helped my study in various ways and also to General l'v1. Cor.r.IG:-Io:-< for his friendly correspondences. Thanks are due to Mr. W. N. EnwAIWS, Keeper of Geology, and Dr. L.F. S!'ATH of British Museum (Natural History) who have afforded me facilities for studying there through the British Council Scholarship.

The Coniacian Forms of Te:wmites

Cou.((;NoN (1948) pointed out that typical Tex.{/11ifes with five rows of tubercles on the ribs do not appear until the middle part of the Coniacian, but that there are in the lower Coniacian certain quadrituberculate species. He separated the latter asParalcxaniles (type species Aforloniceras zeilleri DE GRns­souvRE, 1894 ). There are, howevN. other distinct Coniacian species in Europe and America \vith only three tubercles on each rib and these give a valuable clue to the origins of the family. They are here separated as:-

Protexa11ites nov.

Type species: "Alorto11iceras" bOln-­gcoisi (n'0Rn1GNY) (;ROSSOURVE (1894, p. 73, pl. xiii, fig. 2; pl. xiv. figs. 2-5).

Generic diagnosis :-Similar to Tcx­anites in general aspect, especially in the shell-form. ventral keel and suture­line. Ribs are gently flexuous. arcuate or oblique (especially so near the periph­ery), sometimes dichotomous at the umbilical edge or with intercalated shorter ones; typically trituberculate. with umbilical, ventro-lateral and ventral tubercles and sometimes quadritubercu-

late in the later whorls with one lateral tubercle::; in addition to other three. The ventral tubercles are clavate (i.e. elongated longitudinally).

Remarks :-1 refer to the proposed new genus. besides the type spe;;ies*, Aiorloniceras bon/anti G1wssouvRE (1H94, p. 77, pl. xvii. fig. 2 only. holotype by original designation) and a probable new species represented by a paratype of 'Af. bontanti GRossollVRE' (Ibid., pl. xvii. fig. 3) from the Coniacian of France and also Afortoniceras canaense GERHARDT with variety oblique-costata GERHARDT (1897, p. 73, pl. 1. fig. 2a-C; p. 76. text-fig. 2a) from South America. Furthermore Pcrotziceras amakusense YABE (1902, p. 5, pl. 1, fig. la, b), Mor­/oniccras fulwzawai YABE & SHIMIZU (1925, p. 130 (6), pl. XXX (i), fig. 1; pl. xxxi (ii), figs. 1,2,6,7; pl. xxxiii (iv). figs. 1. 2), which is probably syn­onymous with the preceding species, and Aforloniceras 110mii YABE & SHIMIZU (1935. p. 131 (7). pl. xxxii (iii). figs. 1-3) from the Neourakawan (Santonian) of Japan are referred to the present genus. .Nlortoniceras shoslloneuse MEEK (1876, p. 449, pl. 6, figs. 3a, 3c. 6a; also REESIDE,

1907, p. 9, pl. 6, figs. 16-23; pl. 7, figs. 1-11; pl. 8, figs. 1-4) from the lower Cody shale (Upper Coniacian) and the poorly preserved Mortoniceras strozzii DEsio (1902, p. 204 (16), pl. xii (i), fig. 8) may perhaps be referable to the pre­sent genus.

Those species were mostly referred by Cor.uGNoN (1948) to Texanites. However Texanites should be confined to the

------- ----

* I missed unfortunately an opportunity of

visiting France and Germany to study the specimens of these species, but the

description and illustration of G!WS·

SOUVRE and GERHARDT are sufficiently

clear and reliable.

Evolution of Peroniceratidae 39

group of species \Vhich arc allied to the type species. Ammonites texan us RoEMER.

Tcxanitcs thus revised has rather recti­radiate ribs and quinquetuberculate (ex­cept in very early growth-stage), tuber­cles being nearly equidistant in the lateral view.

A Possible Origin of Peroniccratidac

Protexanites. above defined. is of course intimately related to Texanites (s.s.) but is morphologically relatively less advan­ced and stratigraphically appears earlier. It is one of the earlier representatives of the Peroniceraticlae. Looking at Pro­le:canites, especially at its earl'ier mem­bers. P. bourgcoisi, P. bonta11ti and P. canaense, I cannot deny their striking resemblance to certain species of Upper Turonian Subprionocyclus. such as S. tzcptuni (GEINITZ) and S. crista! us ( BJL­

I.INGHURST). The latter genus, which was revised by WRIGHT & MATSUMOTo

(1951), has umbilical, ventro-lateral and ventral tubercles. The ventral tubercles are clavate. The ribs are rather flexuous or oblique, showing a forward bend at the periphery. They are frequently bifurcate or have intercalated shorter ones. These characters are more or less well retained in Protexanitcs and the only criterion for distinction is the more continuous keel in Protexanites in contrast to the serrated keel in Sub­priottocyclus. However we know that the keel tends to become more con­tinuous in the outer whorl of certain Subprionocyclus. e.g. S. hitchitu.'IISis ( BIL­

l.l!"CHURsT). and it is somewhat wavy in some Protexanitcs.

Thus the ·derivation of Protexauites from Subprionocyclus is almost certain both on morphological and stratigraphi­cal grounds. However the occurrence of Prolexanih·s in the basal horizon of Coniacian has not yet been proved.

This weak point, though minor. should be consolidated in futm·e.

It is also J: ossibile that Subprionocyclus leads to Pcrouicras. if its clavate ventral tubercles also become more continuous. It could also give rise to Paratcxauites CoLLIGNON, 19·18 (type species Jllortoni­ccras zcilleri GRossotiVRE), if one more pair of outer tubercles is added and the ribs are straightened. Howe,·er I have failed to find a good example of inter­mediate forms.

Subpriouoo•clus is small or moderate in size <md a rather unspecialized mem­ber of the Collignoniceraticlae; its distri­bution is wide. It is more likely to have given rise to a new family than the more specialized forms, like Col­lignoniceras ( =Priouolropis). Priouo­cyclus, etc. In fact, as WRIGHT & JVlATsUMOTO has indicated. Reesidites is a specialized end form derived from Subprionocyclus by loss of ventrolateral tubercles and acquisition of a compres­sed and involute shell-form.

Some F('atures in the Evolution

of Pcroniccra tidae

As I have not observed a sufficient number of specimens of Gauthicriceras I hesitate to discuss the origin of it. It might te a derivative from some special member of Collignoniceratidae or it might be a parallel development with Perolli­ceras. Those two genera reach fairly large size. while Yabeiceras is rather small. I do not know where the type specimens of Yabeiceras are prC3erved, so I arn unfortunately unable to say much on this Japanese form. llm•.-ever, from the description of ToKUNAGA & StiiMlZII, 19:.!6 it seems to me a lateral offshoot ru1111ing near Penmiceras and Gautlticriccras. All those genera are confined to the Coniacian.

40 Tatsuro MATSUMOTO

Protexanitcs and Paraiexanites appear in the Lower Coniacian and range up to the Lower Santonian. The earliest representative of Tcxanitcs (s s.) is known in the Upper Coniacian (i.e. T. psettclotexanus (GrwssouvRE)) and the genus is more common in the Santonian. According to CoLr.IGNoN (1948) Bcvallites (Parabevalzitcs) also ranges from the Upper Coniacian to Lower Santonian.

Thus various genera of the Peronice­ratidae developed rather suddenly in the Coniacian and a fe''' of them e\'olved Santonian forms. Another epoch of specialization is in the l'vliddle Cam­panian, when Submortoniceras and Jlfen­abitcs (with its subgenera) flourished. However their distribution seems to be rather local and the development is not

A

B

c

so significant as in the Coniacian. To clarify the details of the evolution

of the Coniacian genera more careful zonal collection is necessary. I should like to give here some remarks on the two genera which flourished in the Santonian.

CoLLIGNON regarded Pm·abcvahites as a derivative of Texa11i!es (in his defini­tion) \vithout showing a good evidence. I would regard Parabcvahilcs as a direct derivative fromParaic:•anites. They are closely allied to each other ; the differ­ence is only in the distance between each two of three outer tubercles. Some may prefer to put Parabevaltiics in the subgenus Paratexanitcs. Anyhow Para­tcxanites is independent cf Texanitcs.

Jlllortoniceras orientale Y Atm (YABE &

D

E

Fig. 1. ·whorl sections of some Texanilids in the relatively late growth-stage. A. Protc:cauites (earlier form): B. Prote:ranitcs (later form); C. Texaniles: D. Paralexanites: E. Para/Jevahites. The dotted line shows intercostal section. (T.l\1. del. adapted from the illustration of the typical species of each genus.)

Evolution of Pcroniceralidae 41

& SHIMIZU. 1925. p. 129 (5), pl. xxxi (ii). figs. 4, 5; pl. xxxiii (iv). fig. 16) from the probable Scapllitcs bed (presumably its Coniacian part?) of Hokkaido was assigned to ParabCI'ahites by Cou.1cr-;oN (1948) but it is a good example of Paratcxanites in the definition of Cor.­l.lGNoN. Its allied s~ies. Aiortouiccras umlucelanense CRICK (1907. p. 228. pl. xv. fig. 9, 9a), is not a Texauitcs nor Bcvallites but a Pantiexauitcs or an intermediate form between Paraic'xanites and Parabevalzites. I fortunately studied the holotype (BM. C. 18134) (fig. 2) and have noticed an interesting fact. The distance between the ventral and ·• mar­ginal" tubercles is in the outer whorl slightly shorter than that between the .. marginal" and " submarginal " tuber­cles, but slightly longer in the inner whorl. Moreover in the visible earlier part of the inner whorl at diameters below 120 mm .. the tv.-o peripheral tuber­cles tend to ha \·e a common base whereas they are separated from the clavate ventral tubercle by a somewhat deep depression.

Summarizing the above. the character of Parabevalzites lends to appear in the inner whorl of this species, while its large outer whorl is rather of Para­tcxanites type. (We can ignore the weakening of the keel in the last por­tion as minor feature in regard to this problem.) Paratcxanitcs umkwclancusis (CHICK) is thus morphologically very interesting, but unfortunately its exact date is doubtful.

Afortoniceras dcsmondi GRossouvRE (Ammonites texanus Scm.uTER. 1867. p. 32, pl. vi, fig. 3 only), which was assigned by CoLLIGNON to Tl'Xauites with a query. seems to me to be an early Parabc/1(1/zi­tes or an intermediate form between Paratcxauilcs and Parabevahilcs. It is recorded from the boundary of Coniacian

0 5 em.

Fig. 2. Whorl section of Paralc.wmites

umkwelaiiCIISis (CRICK) Bl\'L C. 1813·1, Umkwelane Hill, Zu\u\and, Africa. (T.I\L del. by kind pernlis­sion of Keeper of Geology, British 1\Iuseum (1\'atura\ History)).

and Santonian or the top of the Con­iacian.

The Upper Santonian- Middle Cam­pani:m Bevalzitcs apparently resembles quadrituberculate later Protcxanites but must be a parallel development, since it shows evidence of having developed through Parabevaltilcs by unification of the two peripheral tubercles.

Whether Texanilcs (s.s.) is a deri\·a­tive of Paratcxanilcs or Protexanitcs is still uncertain. However the outer lat­eral (or " submarginal ") tubercle in

42 Tatsuro l\IATSUMOTO

Texauites is often, if not always, rather weak. Prole:rallites could lead to Tc:r­anites by straightening of ribs and ad­dition of outer lateral tubercles. From this fact and from another fact which will l:e mentioned below I am inclined to regard Protexanifcs- Texcmiles series as parallel with Paratcxauites-Parabcva­hitcs-Bcvalzt"tcs series.

Fig. 3. Whorl section of Tc:wnifcs :wutoni (BAILY) BM. C. 4721il. A cliff of the coast of S. Africa, near the Umtafuna and Umzarnbani River. (T. !\1. del. by kind per­mission of Keeper of Geology. British 1\Iuse­um (Natural History)).

The fact which I ltave noticed is found in Ammonites soutoni BAILY (1855, p. 453, pl. xi, fig. la-c). another African species. Its apparent resemblance to our •· l'.fortouircras" fukazmcai and " AI.'' uomii had been stuck on my mind until I saw the specimens of that species. The type specimen illustrated by BAILY (BM. C. 472Gl) (fig. 3) is a very large example with a diameter of 475mm. Its inner whorl below a diameter of about 100 mm. shows the typical char­acter of Texauitcs with the prominent three equidistant tubercles which are visible on the lateral side, besides the two outer ones overlapJ:ed by the outer \vhorl: the ribs are nearly rectiradiate\vith occasional intercalation or branching. The quinquetuberculate ornamentation continues up to a diameter of about 300mm .. where the last septum is found. However the two lateral tubercles are weakened as the shell grows on. On the body whorl the two lateral tubercles are almost completely lost while the ribs themseh·es are very strong and. on the unweathered part. especially where the test is preserved. the umbilical, ventrolateral and clavate, ventral tul:er­cles are also fairly strong. Morever the ribs show a gentle ftexuosity on the outer whorl.

Thus the species in question is a typical Texanitcs in its inner whorls and shows clear characters of Profexanites in its adult body whorl. In other words, as in the previous example, Texanites seems to be caenogenetically evolved from Prote.umites. It is a matter of convention to refer the species in ques­tion to Texauitcs, admitting it as a sort of an intermediate form between the two genera.

We know another species of more typical and large Tcxanitcs, T. staugeri (BAILY), occurring in the same area of

Evolution of Peroniceratidac 43

T. sou toni (BAILY). Unfortunately there is no record of zonal collections in Southeast Africa hut the two species have been regarded as coming from the same horizon, associated with Hauen"ceras gardeni (BAILY) and Psl"lt­doxllloenbaclzia mnbulazi (BAU.Y) (e.g. SPATH (1922)).

In the Japanese province Protcxauites nomii (YAnE & SmMIZU) (inc.:luding the specimens in subsequent collections) occurs in the ~eourakawan (Santonian), where Haucricct·as gardcni is common. '' Pet·oniccras" amakuscuse YAnE came

from the probable Santonian of Ama­kus:I. Kyushu. Examining tT1e holotype it is not a Pcrouiceras but a crushed Protexanitcs and very probably an im­mature Protexatzites fu/wzatmi (YABE & SHIMizu). The large specimens of the latter came from Oda-Mura, Uto, Kuma­moto Prefecture. As there ·is Inoceramus japouicus in the same area the fossil­iferous horizon of Oda-mura is correlated with the Neourakawan. In Hinoshima islet of Amakusa I have collected a large Texauites which is comparable to 1'. oliz,cti (BtA~c~->ENHoHN). As the oc-

EVOLUTION OF PERONICERATIDAE

TURONIAN CONIACIAN SANTONIAN CAMPAI\IIAN MAESTRICHTIAN

YABEICERAS -- --;

,' GAUTHIERICERAS ' ,, ,..... ,,

PERONICERAS ('\ ,,

0 ( r !:::: (suePRIONOCYG~ ~

z 0 z -(')

"' :u r;.

-1 -0

l> 1"'1

~

? 'a-PROT EX AN IT E S

' ---' TEXANITES

' ' ~ SUBMORTONICERAS

PARATEXANIT E 5

' PIIRABEVAWTE S ' ·. '

~(REESIOIT ES) BE VAHITES ·--'. MENABITES .. ; I BERERELLA) ...... ',I AUSTRALIELLA) ',·-. :.(~ELAWARELLA)

Table I. Evolution of Peroniceratidae. Thick line: range of genera of relatively wide distribution; Thin line: range of genera or subgenera of local distribution. The genera of Collignoniceratidae mentioned in the text are in bracket [ line with an arrow shows the presumed course of evolution.

]. The dotted

44 Tatsuro 1\IATSUMoTo

currence of these forms arc rather sporadic. tb't zonal examination is again diffil:ult. They occur in the Nemrr<tka­wan. if not at the same horizon.

Although I know an undescribed specimen of a Parabevahites-like form occurring in the Santonian of Hokkaido, true Campanian Peroniceratids have not yet been found in Japan and South Saghalien. The so-called Submortomi:eras in the list of Sm.MJzu (1935) is not war­rantable in the generic and stratigraphic assignment.

Finally I present here a range chart of the genera and subgenera of Per­oniceratidae with a supposed line of evolution. It depends much on Gen. M. Cor.I.IGNoN's work and Mr. C. W. WRIGHT's

personal communication but is modified by my own opinion.

Works Cited

BAILY, W.H., (1855). Description of some Cre­taceous Fossils from South Africa: collected by Capt. GARDEN, of the 45th Regiment. Quart. four. Ceo/. Soc. London, 11. 454-465, pis. xi·xiii.

CoLI.IGNON. !'vi., (1948 a, b) Anm1onites Neo· cretacees du Menabe (Madagascar) 1-Les Texanitidae. Ann. Ceo/. de Serv. de Jl,fines, Fasc. N°13. 49-107 (1-62). pls. vii (i)-xx (:-.:iv): N° 14, 7-60 (43-116); 99-101, pls. xv-xxxii.

CRICK, G.C .. (1907), Cretaceous Fossils of Natal, Part 3. Third and Final Report Ceol. Surv. Natal & Zululand, 163-262, pis. x-xv.

DESio. A., (1920), La crata ncl bacino di Firenze. PaleoHt. /tal., 26. 189-243, pis. xii­xix (i-viii).

CERIIARDT, K., (1897), Beitrag zur Kenntniss der Kreideformation in Venezuela und Peru, in STEINMANN, Reitr. Geol. u. Pala-

eont. Siidamcrikas. Ncues fahrb. f Min. usw .. !3eil. Bd. 11, 65-117. pis. i-ii.

CROSSOUVI~E. A. DE, (1894), Recherches sur Ia Craie Superieure. II-Paleontologie. Les Ammonites de Ia Craie Superieure. .Ucm.

Carte g:-ol. d:-1. Pmnce (1893). 26-1 pp .. 39 pis.

MEEK. F.B .. (1876), Invertebrate Cretaceous and Tertiary Fos.'lils of the Upper 1\fiswuri County, Rep. U.S. Ceo/. Surv. Territories, 9. 629 pp., 45 pis.

REESIDE, J. B. Jr .. (1927). Cephalopods from the lower part of the Cody shale of Oregon Basin, Wyoming. U.S. Ceo/. Surv. Prof Paper, 150A. 1-10. 8 pls.

ScHLUTER. C., (1867), Beitrag zur Kenntniss der jiingsten Ammoneen Norddeutschland,, 36 pp., 6 pis., Bonn.

SHJJ\I!Zll, S .. (Hl35). The Upper Cretaceous Cephalopods of japan, Part I. four. Shanghai Sci. Ins/., [II], 2. 159-2'26.

SPATH, L.F., (1922), On the Senonian Ammonite Fauna of Pondoland. Trans. Roy. Soc. South Ajl'ica, 10. 3. 131-147, pis. v-ix.

ToJ\UNAt;A, S. & S. SHIMIZU., (1926), The Cretaceous formation of Futaba in Iwaki and its Fossils. four .. Pac. &i., Imp. U11iv. Tokyo, [2], 1. pt. 6. 181-212. pis. xxvi· xxvii.

\VRIGIIT, C. W., (1952), A Classification of the Cretaceous Ammonites. four. Paleont., 26. 213·222.

WRIGHT, C.W. & T. MATSUMOTO, (1954), Some Doubtful Cretaceous Ammonite Genera from Japan and South Saghalien. 1'>-fem. Fac. Sci .. K.vuslm U11iv., [D), 4, 103·134, pis. 7-8.

YABE. H., (1902), Notes on three Upper Creta· ceous Ammonites from Japan, outside of Hokkaido. four. Ceo/. Soc. Tokyo, 9. (English Pages) I-7. pl. i.

YAIIE, H. & S. SiliJI.IIZU, (1925). japanese Cretaceous Ammonites belonging to Pri­onotropidae. I. &i. Rep. Tohoku Imp. ll11iv., [2], 7, 125-138, pis. :a."X·X."<Jdii.

Trans. Proc. Palaeont. Soc. Japan. N.S., No. 18, pp. 45---48, Pl. 7, June 20, 1955.

266. HIDAELLA, A NEW GENUS OF THE PENNSYLVANIAN

FUSULINIDS FROM THE FUKUJI DISTRICT, EASTERN

PART OF THE HIDA MOUNT AINLAND,

CENTRAL JAPAN*

HARUYOSHI FUJIMOTO and HISA YOSHI IGO

Tokyo University of Education

~~tlli1l!ff.V&mil!q)"- :/ ;,t ,~,.~~:.-Hi~ .t IJ vrr-t l.>Wi~-tl!!ltq)~/£ Hidaella: ~~1iHl!i1l!tMtll!milil::~ :i:l-t .r,-(l)~t'f:i!K~h'J• t_,~~!1J.q)-~j[,a-3EJ\!. L. t.:Q)·(-, Hidae/la c ~11 L. .:. 1..1.::~~~-t .r,o :;$:/£

't Fusulinella I.::J:({I1"C\.•.r,;i):, lt\t~:il:~(l~ill!l.."C\.·~BD•~.>I2S:l:ll]·c~~o ~fili Hidac/la

kamcii 't-q)~:{j)!R!fJrpa!\l.:::l!lti\\"l::i!li L. Fusulina JiitC.Jl<:fJ:-t.r,o illi*i'/1~ · SX~~~

Recently, the writers discovered some interesting fusulinids in the Ichinotani Group which is distributed ncar Fukuji. Kamitakara Village, Yoshiki District, Gifu Prefecture. The materials were collected from a black impure limestone of the lower division of the Ichinotani Group developed at the Ichinotani and the Mizuboradani valleys.

The Ichinotani Group is divided into the following two lithological units. (1) Lower or lchinotani limestone; ( 2) Upper or alternation of sandstone and shale intercalating conglomerate. The Ichino­tani limestone yields a rich fauna con­sisting of fusulinids, smaller foraminifers, corals and gastropods. From the evid· ence of these fossils, the limestone is inferred to correspond to the highest Morrowan? to the basal Permian.

The specimens here considered as re­presenting a new genus can be distin­guished from its allied forms principally by the irregular undulation of its spiro-

* Read oct. 9, l954; received Nov. 24, 1954.

45

theca. which is undulated both meridio­nally and equatorially. The spirothcca is composed of a tectum. upper and lower tectoria and a diaphanotheca. In the general shape o!' the shell and the irre­gular undulation of the spirotheca the present type resembles Rugosojusuli11a H.AUSER-CERNoussov A, from which it is distinguished by the lack of a keriotheca. The present type also resemples Fusu­liuella Mor.r.ER, but is distinguishable therefrom by the irregular rugose spiro­theca. This type is believed to be an aberrant descendant of the genus Fusu­li1lella, referable to no known genus, and in need of a new generic name for which llidaclla is proposed. The phy­logenetic position of Hidaella is referred to the subfamily Fusulininae.

Genus Hidaella FuJIMOTo and lGi\

new genus

Genotype :-Hidaella lwmeii FuJIMOTo

and lGu, new species. Diagnosis:-Shell rather small, elongate

fusiform to subcylinclrical; central portion

•16 Haruyoshi FlJJil\IOTo and llisayoshi lGo

sliglitly inflated or straight: polar regions broadly rounded; mature specimens with about five volutions. Axial length. 2.4 to 3.2mm., median width, 0.87 to 1.3nun. ; axial ratio. about 1 : 3.0 in last volution. First two to three volutions tightly coiled, axis of coiling short, subspherical or slightly quadrangular in shape: outer volutions rather inflated, proloculus minute: generally spherical. Spirotheca composed of thin and dense tectum, less dense upper and lower tectoria and dia­phanotheca; irregularly and highly undulated throughout. ~epta numerous, thin and complicately folded in polar regions. Tunnel singular with regular or irregular path, narrow to broad tunnel angle; chomata m;1ssive and of moderate he·ight. Axial filling lacking.

Remarks :-Hidadla resembles Fusu­liuclla in several respects, especially in the inner volutions possessing a short axis of coiling, spirothecal structure. massive chomat.a, and in the septal fluting. The irregular undulation of the spirotheca of llidaclla removes it from Fusuliuella and suggests that it may be an aberrant descendant of the latter. The undulation of the spirotheca has been reported in some fusu1inid genera as Rugosofusulina l<AUSER-CER!';oussov A,

which may be distinguished from Sc/f(('a­geriua MoLLER by the rugose spirotheca; their inner characters. however. nrc much alike. Hidaclla resembles the genotype of Rugosofusulina, but differs therefrom by the spirothecal structures. !Iidael/a from its structural features is referred to the subfamily Fusulininae. while Rugosofusulina belongs to the ~ch wager in ina e.

Hidaella lwmcii FuJIMoTo and leu, new species

Pl. 7, Figs. 1-10.

Shell rather small, subfusifonn to sub­cylindrical : central portion slightly in­flated or straight; polar regions broadly rmmded : mature specimens with about five volutions, axial length 2.4 to 3.4 mm., median width 0.87 to 1.3 mm. ; axial ratio 1 : 2.5 to 1 : 3.5 in la3t volution.

Firdt two to three volutions closely coiled, their heights increase slowly, with short axis of coiling. subspherical or slightly quadrangular in shape; outer volutions generally rather inflated, elon­gate fusiform to subcylinclrical; uncom­monly loosely coiled and irregular (Fig. 8); axial ratio of first to last volutions in holotype. 0.83, 1.0. 1.3, 1.7. 1.9, and 2.8, respectively ; proloculus very minute, about 0.07 mm. in diameter, generally spherical. but sometimes subellipsoidal.

Spirotheca thin, thickness gradually increasing from inner to outer, composed of thin and dense tectum. less dense upper and lower tectoria and a trans­parent diaphanotheca. Diaphanothec.o'l developed on inner ones to three volu­tions. Lower tectorium of last volution usually indistinct. Average thickness of spirotheca of first to last volution in holotype and two paratypes are 7, 11, 13, 17. 26, and 15 microns.

Septa numerous and thin; sept::d fold­ing strong and irregular in polar regions, but feeble in central portions.

Tunnel singular with regular or ir­regular path, tunnel angle narrow to broad and measures 26, 31. and 52 degrees in inner two to four volutions, respec­tively in holotype; chomata distinct throughout shell. massive, of moderate height. their tunnel side and poleward slope generally steep. but the latter may be low. AxjaJ filling quite absent.

Rcmarlts :-In the general size of the shell. axial ratio, spirothecal structure. septal flutings. and de\·elopment of the chomata, Ilidaclla kameii resembles

Results of measurement are as follows: (in mm)

I I Fi ure I II I I . I Rate of growth -~-----Form ratio of volutions ! ~ S ·me 1• Reg. 1 !{n L W 1 Form D1am. __ . ::::

l--pec_,_n_1_N_·o_._~ l~oco I ~--l-r-atio -l-pr-ol_. _~ ___ n_~j_:_ _"___'"_l_r ___ u_~__:__v___'"_l ~ Para type 20100

1

fig. 1 , 2. 6 1. 0 2 5 .

1

. 087 16 . 23 . 361 . 66 L 0 L 0 I. 7 2. 0 : 2. I 2. 5 I ~ Holotype 20101,1 fig. 2 2.4, .851 2.8 .052 .10 .16 .26 .42 .69 .871 .83 1.0 1.3 11.7 1.9 2.8 ~ Paratype 201021 fig. 3 2.9 1.0 2.9 I .06~1 .12 .211 .:n .50 .78 I.o 11.0 1.2 1.4 1.5 2.2 2.9 ~ Paratype 20110 fig. 4 3. 4 ' . 99 3. 5 ? ? . 26 . 35 1

• 59 . 99 I ' I. 5 2. 8 ' 2. 9 3. 5 '""

Para type 20103 I fig. 5 3. 1 i1

1. 0 1 3. 0 I . 052 . 16 . 28 . 471 . 69 1. 0 11. 0 1. 0 2. 2 I S. 0 3. 0

,....

Para type 20104 fig. 8 ? 1. 3

1

, ? ? . 12 . 24 . 43 . 69 I. 1 I. 3 11. 7 2. 3 2 4 2. 6

Paratype 20105 : 2. 7 . 87 3. 1 ? . 09 . 21 . :-!5 . 69 . 87 1. 2 1. 5 1. 7 ' 2. 0 I 3. 1

lp"""'' 2<)1061 ' 1.1 - '. I (J69 • ~ " I "I "I 11 I 1.1 I.~- 24 j 1

;;

~ ;; '::. <: :J ::; Ei' :::

1

1

IF. I Thickness of sp1rotheca Septal count I Tunnel angle (degree) R , 1gure ..,

Sj~lme~l Ni' lp:~"i_r_J_n_(~ _:__v_i~!--_r_I_II_I~I~i-v ___ r __ I_r_!~ IV r_ v l--'"-11 Paratype 20100 I fig 11.011 .017 .017 .020 .022 1 I I 2 Holotype 20101 f1g. 2 , . 006 . 006 I· 011 . 0171 . 0221.028 .1 I 26 I 3-1 52 I ; Para type 201021 fig. 31 . 006 . 011 . 011 . 014 1 • 034

1

• 017 28 50 ::

Paratype 20107 fig. 6 11

I ? 4 12 I Parat}'pe 20110 I fig. 4 ? ? . 017 . 028 I . 022

1 1 1

1 1 1 1 ~ Para type 20104 fig. 8 ? . 017 . 028 . 028,. 022 ~ \ I I

Paratype 20105 ? .011 .017 .022 1 .028 \ \ \ 1 •

Paratype I 25103 [fig. 5 _-_:6_.~11 ;.017 .017 L~2~j___ lQ

:s

48 Haruyoshi FU.Jll\!OTO and Hisayoshi lG6

Fusulinella jlu:w LEE and CHES more closely than any other species of the genus Fusulinella. The former can be distinguished from the latter by its highly irregular tmdulation of the spiro· theca and small cylindrical shell.

Type locality and geological lw1·izotz :­Fukuji, Kamitakara Village, Yoshiki District, Gifu Prefecture. lchinolani limestone (middle part). Preserved in the Collection of the Geological ::md 1\lineralogical Institute, Faculty of Science. Tokyo University of Education. Reg. No. 20101 (Holotype) 20100, 20102. 20103, 20104. 20105, 20106, 20107, 20108, 20109. 20110 (Paratype). Zone of Fusulina.

Occr!rrcnce :-This species is common in the middle part of the Ichinotani limestone where it is associated with Ozawainella angulata (CoLAN!). Fusiclla typica LEE and Cm:r-;, F. paradoxa LEE and CHEN, Pseudostaffel/a sp/lCroidca (MoLLER), Fusuliua lanceolata (LEE and CHEN). F. sclzellwieni (S rAFF). and F iclzinotauicnsis, new species. From fossil evidence it is clear that the faunal

assemblage is a representative of the Zone of Fusulina as recognized in North America and in Kyushu, Japan.

Previously the Zone of Fusulina was not welle stablished in Asia, but from recent discoveries, its existence has be­come a recognized fact in not only Kyushu but also the Hida mountainland.

References

KAMEl. T., (1952). The Stratigraphy of the Paleozoic Rocks of the Fukuji District; ]our. Fac. Liberal Arls, Shi11slm U11iversity, }yfatsumoto, pp. -1-1-74.

KAM:'-.!ERA, K .. (1952), The Upper Carboniferous and the Lower Permian of the Hikawa Valley (in japanese with English resume): four., Ceo/. Soc. japan, vol. 58, pp. 17-32.

LEE, ]. S. and CHEN, S .. (19:30), Huanglung limestone and its fauna. Foraminifera: Nat. Research Inst. Geology, .Mem., 110. 9, pp. 90-136, pis. 2-13.

THOMPSON, l\1 L., (1948), Studies of American Fusulinids: U11iv. Ka11sas Paleont. Contr. Protozoa, Art. 1.

--, (1954), American Wolfcampian Fusulinids: Ibid. Art. 5.

Explanation of Plate 7

Figs. 1-10. Hidaella lwmeii FUJIMoTo and lGii, new species. All figures enlarged 20 times. Figs. l, 3, 5. Axial s.::ctions of paralypes. Reg. no. 20100, 20102, 20103, respectively. Fig. 2. Axial section of the holotype. Reg. no. 20101. Figs. 4, 7. 8, 9, 10. Tangential sections of paratypes. Reg. no. 20110, 20108, 20104, 20109, 20111,

respectively. Fig. 6. Parallel section of a paratype. Reg. no. 20107.

(All oi the specimens are deposited in the collection of the Tokyo University of Education).

PruT;-.roTo and Ico : Hidaella

P r.ATE 7

4

6

7

9 10

Photo. by S. AoKr

Trans. Proc. Palaeonl. Soc. Japan, N.S., No. 18, pp. 49-50, 2 text-figs. June 20, 1955.

267. SPIROSIG!v!OILINELLA, A NEW FORAMINIFERAL GENUS

FROM THE MIOCENE OF JAPAN

TAKASHI MATSUNAGA

Teikoku Oil Company, Tokyo, Japan

B )ji:ll)I'Jl~iY:tJ• ~>il€/ll L t.::~rfL!Illl)cffrlm Spirosigmoilinella :-~ 8 ;;$:11) rll~iJl:il' ~J~~~-t o1fJL !!J.Il)~~. tfTllll Spirosigmoilinella comprcssa MATSUNAGA ~lJC,I& L. llfJ.l~ll)Wfl·e(tftll)i{l\il

il~ri'i{i\tll)r:f:lrUI\t::!IR--:>-c i/fiill-t ~$~Z. Mft.:o 11~7k -:$.

In troductinn

Investigations of the Miocene sedi­ments of Hokkaido and North Honshu, Japan, as an important project in petroleum exploration, have led to the necessity of paleontological evidence for correlation purposes. Continued labora­tory work on the Foraminifera contained in boring cores and obtained from slU'face exposures. revealed the presence of a peculiar type. which is thought to have important bearing on the problem.

The peculiar type, which is believed to represent a new genus, was first discovered among surface samples ob­tained from Kugami, Kugami-mura, Nishikanbara-gun, Niigata Prefecture. by Mr. Shogo TAKAIIASHJ, then a geologi&t of our company. Subsequently. this genus has been found to occur abun­dantly in the Miocene sediments in North Honshu, although its presence in the Miocene rocks of Hokkaido has not yet been proven. The distribution in sedi­ments of Miocene age of this genus ::;eems to indicate that it is important both stratigraphically and paleoecolo­gically.

~-------

* Read June 26, 1954; received Nov. 6, 1954.

49

Acknowledgements

To the following gentlemen the writer expresses his gratitude. Dr. Kiyoshi AsAKO for assistance in discrimination of the material and Dr. Kotora HATAJ for revising the manuscript. Dr. Tsune­teru OJ~ol\!IKAoo and members of our laboratory, for their assistance in many ways.

Family Silicinidea

Subfamily Rzehakininae

Genus Spirosigmoiliuella MATSUNAGA, n. gen.

Gc11otypc :-Spirosigmoilit~ella com-pn·ssa MATSUNAGA, n. Sp.

Description. :-Test in early stage similar to Silicosigmoilina, but diverging therefrom in adult stage by developing chambers in a single plane; chambers compressed, wall finely arenaceous. with siliceous cement; aperture at end of chamber, rounded, with short neck, and without a tooth.

Remarks :-This new genus can be distinguished from Silicosigmoilina by the development of spiroloculine cham­bers in the adult stage, and from Spiro­sigmoilina by the presence of a siliceous

50 Takashi MATSUNAGA

test, that is, by the characters of their shells.

Geological range :-Lower to Middle Miocene. Japan.

S Pit·osigmoilinclla compressa MATSVNACA, n. sp.

Text-figs. 1-2

Description:-Test strongly compressed, about twice as long as broad, periphery subangular: early chambers sigmoidal, later ones spiroloculine; suture often indistinct: wall finely arenaceous with siliceous cement : aperture at end of chamber, rounded. with a short neck and no tooth.

Text-figs. 1-2 Spirosigmoiliuc/la comprcssa MATSUNAGA,

n. gen., n. sp. x 51 la, b. Holotype, Teradomari Formation, Niigata Pref., Japan. 2. Young specimen, Teradomari Formation, at a depth of 856.0 m. in the Tei­koku Oil Company's Tanaka R-5, Tanaka. Nishigoshi-mura, Santo-gun, Niigata Pre£., Japan.

Dimcnsiom:-Maximum length of bolo­type 0.59 rnm. Paratypes range in length

from 0.37 mm to 0.71 nun. Locality and geological age :-From

the upper part of the Teradomari for­mation <Middle l\liocene) at a depth of H'l4.8 meters in the Teikoku Oil Com­pany's Yahiko R-2, 80 meters east of Yahagi, Yahiko-nmra, Nishikanbara-gun, Niigata Prefecture, Japan. Holotype (TOC. Pal. Coli. Cat. No. 601451). Deposited in the collection of the Paleontological Laboratory, Teikoku Oil Company, Tokyo, Japan.

Occurrence :-Besides the type locality above mentioned, the genus is found in the following formations: Teradomari and Nanatani formations in Niigata Prefecture. Lower part of the Kitamata and Upper part of the Aosawa formations in the Shonai district, Yamagata Pre­fecture. Funakawa and Onnagawa formations in Al<ita Prefecture. Up to the present: time. the genus has not been found in horizons younger than the formations afore-mentioned. Although it has not yet been found in Hokkaido, its occurrence is expected.

References

ASANO, K., (1950), Upper Cretaceous Foramini­fera from Japan: Pacific Science, Honolulu, vol. 4, 110. 2, p. 159, pl. 1, figs. 6-7.

CUSHMAN. J. A. and C. C. CHURCH, (1929), Some Upper Cretaceous For:~minifera from near Coalinga. California: California Acad. Sci., Proc., San Fraucisco, Cal., scr. 4, vol. 18, no. 16, p. 502. pl. 36, figs. lll-12.

PARR, W. ]., (1942), New Genera of Foramini­fera from the Tertiary of Victoria: !lfining mzd Gcol. jour., !.Jelboume, vol. 2, 110. 6, p. 361.

51

PUBLICATIONS RECEIVED (9)

Number 1078. L. Clark: Som!> Hepaticae from the

Galapagos, Cocos, and other Pacific Coast Islands. Proc. Calif. Acad. Sci., ;-;~r. 4,

Vol. 27, No. 18, 1953 1079. C. M. Younge: Observations on Hipponix

antiquatus (Linnaeus) Ibid., s.:r. 4. Vol. 28, No. 1, 1953

1080 . .1. Linsley Gre:>.>itt: The California Aca­demy-Lingnan Dawn-Redwood Expedition Ibid., ser. 4. Vol. 28, No. 2, 1953

1081. E. 0. Essig: Some New and Noteworthy Aphirbe from western and s:->ulhern South America. Ibid., s~r. 4. Vol. 28,

No. 3, 1953 1082. 1\Icm. Fac. Sci., Kyushu Univ . Ser. D.

Vol. 4. No. 1. 1954 lOS:~. l\Iem. Fac. Sci., Kyushu Univ., Ser. D,

Vol. 4. No. 2, 1954 108·!. C. P. Chatwin: British Regional Geology

East Anglia and Adjoining Area. 3rd eel 195-l

1085. C~uart. Journ. Geol. Soc. London, Vol. 107, pt. 1, 1951

1086. Quart. .Journ. (~eo!. Soc. London, Vol. 107,

pt. 2, 1952 1087. (~uart. Journ. Geol. Soc. London. Vol. 107,

pt. 3, 1952

--------- --- ------------

PROCEEDINGS OF THE PALAEONTOLOGICAL

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Teiichi KOBAYASHI The Bituberculate Pachydiscicls from Hok­

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References cited

KATO. llirosi (1941): On the fossils from ........... ·, fap. four. Gcol. Geogr., Vol, 28, pp. 74-81. YAMAMoTo, Siro (19-IOa): Geology of .............. jour. Geol. Soc. japan, Vol. 58, pp. 102-133. ·--- (1940b): Volcanic rocks of Sinano district, four. Fac. Soi .. Tokyo Imp. U11iv. Sect. 11, Vol.

13, Pl. 4, pp. 1-31.

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