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Geographical location of the studied area
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PLEISTOCENE RODENTS FROM THE URALS AND WEST-SIBERIAN PLAIN: BIOCHRONOLOGICAL
IMPLICATIONS
ALEXANDER BORODIN presenter's e-mail: [email protected]
Institute of Plant and Animal Ecology RAS
Ekaterinburg, Russia
The goal of our presentation is to give the biochronologic characteristic of rodents and
especially arvicolids in Quaternary faunas of the Urals and West-Siberian Plain.
Three points to be discussed: - Sequence of structural changes in molars - Molar size changes in some phyletic lineages - The changes in species composition of small mammal faunas
The analyzed material includes the author’s collections and also some published data (Krukover 1992, Maleeva 1970, 1976, 1984, Maleeva & Stefanovski 1988, Smirnov 1994, 1996, Strukova 1999, 2002, Zazhigin 1980, Zudin et al. 1977, et al.)
Geographical location of the studied areaGeographical location of the studied area
Geographical location of the sites of small mammal
faunas in the Urals and
West-Siberian Plain
Geographical location of the sites of small mammal
faunas in the Urals and
West-Siberian Plain
Geographical location of the sites of small mammal
faunas in the Urals and
West-Siberian Plain
Geographical location of the sites of small mammal
faunas in the Urals and
West-Siberian Plain
Geographical location of the sites of small mammal
faunas in the Urals and
West-Siberian Plain
Structural characteristics of rodents’ teeth
Stages of evolution in molars of West-Siberian arvicolid rodents
MQ zones of Quarternary in Western Europe, Urals and West-Siberian PlainGlaci-ations
East European stratigrraphic
scale (Vangengejm et al., 2001)
Siberian stratigraphical
scale (Arkhipov, 1987, 1989)
Syst
em
Subs
erie
s
Link
10Sartan Ostashkovo Sartan
Monchalovo KarginianHashoort
Kormydzi-hantka 100
Riss-W?rm Mikulinian
Kazantsevo
Tazovian Tazovian Tazovian Kalmankian Shirta
Upper Samarovo
200 Odintsovian
Lower Samarovo 300
Dneprovian
M.arvalis-L.transiens
400A.mosbachensis-M.arvalinus
500
600P. oeconomus - S.gregaloides
Azovy Lower Shaitan
Don AzovianS.gregaloides-P.protoeconomus
Ilyinian MQR6Pokrovskian
750?Mansi Mansi Mansi
Gornofilino
Ja
1200 E.argyropuloi - P.ternopolitanus
A.pliocaenicus
O
ZhevakhovianChumla-
kian I MQR11 A.deucalion-Borsodia
2150?
S.hintoni P.pannonicus
Lagurus transiens- S.hintoni
Upper part of Kochkovka formation
Khazarian Yarsino f.c.
MQR3 A.mosbachensis L.transiens
MQR5
MQR7
MQR4
Mat
uyam
a /R
/B
runh
es \N
\M
agne
tost
ratig
raph
y
Uppe
rPl
eist
ocen
e
1800
Qua
tern
ary
Mid
dle
Mid
dle
Q 2 Bachta Riss
Uppe
r Northern
and central parts of
West Siberia
Trans-Urals
Age, Ka
ScaleGeneral Till Sequence in West Siberia (Arkhipov,
1989)
MQR1 A.terrestris Ermakovian
MQR2 L.lagurus A.mosbachensis Samarovo
Plei
stoc
ene
Q Uppe
r Q 3 Zyrjanka W?rm
Kalininian
Mindel-Riss Likhvinian
Moskovian
Mammu-thus
faunal complex
Mammu-thus
faunal complex Upper part
yyyyyyyyyyyyyyyy
yy Lower part
Mammuthus faunal
complex
Low
er Q 1
Nizjami Upper Shaitan
Shaitan Mindel
OkianNizjamian
SingilianChembakchino f.c. Tobolian
Petropavlian
Muchkapian Tiltimian
Talagaika
Tiras-polian Viatkian
Koshelevo f.c.
Baturino f.c.
Mammalian faunal complexes (f.c.)
ZonesGlobal Russian
Siberian, Alpine Horizons
Serie
s
HorizonsEastern Europe
South of West Siberia (The
uniform stratigraphic
scheme, 2000)
Low
erEo
plei
stoc
ene-
EP
Lower part of Kochkovka formation
Tamanian
Uppe
rLo
wer
Nogaiskian
Kizikhian
MQR9
Razdolian
MQR8
Scoro-dumian
Sarykulian
Morosovian
Khapro-vian
Podpusk-Lebiazhian
Pse-kupian
Neog
ene
Plio
cene
Uppe
rAk
chag
ylia
n
860?
A.pliocaenicus P.ternopolitanus
Chumla-kian II
MQR10 P.ternopolitanus A.deucalion
Subzones
P.protoeconomus P.pannonicus
S.hintoni - Lagurodon arankae
S. gregalis - M.intermedius
S. gregaloides
P.pannonicus A.pliocaenicus
Glaci-ations
East European stratigrraphic
scale (Vangengejm et al., 2001)
Siberian stratigraphical
scale (Arkhipov, 1987, 1989)
Syst
em
Subs
erie
s
Link
10Sartan Ostashkovo Sartan
Monchalovo KarginianHashoort
Kormydzi-hantka 100
Riss-W?rm Mikulinian
Kazantsevo
Tazovian Tazovian Tazovian Kalmankian Shirta
Upper Samarovo
200 Odintsovian
Lower Samarovo 300
Dneprovian
M.arvalis-L.transiens
400A.mosbachensis-M.arvalinus
500
600P. oeconomus - S.gregaloides
Azovy Lower Shaitan
Don AzovianS.gregaloides-P.protoeconomus
Ilyinian MQR6Pokrovskian
750?Mansi Mansi Mansi
Gornofilino
Ja
1200 E.argyropuloi - P.ternopolitanus
A.pliocaenicus
O
ZhevakhovianChumla-
kian I MQR11A.deucalion-Borsodia
2150?
S.hintoni P.pannonicus
Lagurus transiens- S.hintoni
Upper part of Kochkovka formation
Khazarian Yarsino f.c.
MQR3 A.mosbachensis L.transiens
MQR5
MQR7
MQR4
Mat
uyam
a /R
/B
runh
es \N
\M
agne
tost
ratig
raph
y
Uppe
rPl
eist
ocen
e
1800
Qua
tern
ary
Mid
dle
Mid
dle
Q 2 Bachta Riss
Uppe
r Northern
and central parts of
West Siberia
Trans-Urals
Age, Ka
ScaleGeneral Till Sequence in West Siberia (Arkhipov,
1989)
MQR1 A.terrestris Ermakovian
MQR2 L.lagurus A.mosbachensis Samarovo
Plei
stoc
ene
Q Uppe
r Q 3 Zyrjanka W?rm
Kalininian
Mindel-Riss Likhvinian
Moskovian
Mammu-thus
faunal complex
Mammu-thus
faunal complex Upper part
yyyyyyyyyyyyyyyy
yy Lower part
Mammuthus faunal
complex
Low
er Q 1
Nizjami Upper Shaitan
Shaitan Mindel
OkianNizjamian
SingilianChembakchino f.c. Tobolian
Petropavlian
Muchkapian Tiltimian
Talagaika
Tiras-polian Viatkian
Koshelevo f.c.
Baturino f.c.
Mammalian faunal complexes (f.c.)
ZonesGlobal Russian
Siberian, Alpine Horizons
Serie
s
HorizonsEastern Europe
South of West Siberia (The
uniform stratigraphic
scheme, 2000)
Low
erEo
plei
stoc
ene-
EP
Lower part of Kochkovka formation
Tamanian
Uppe
rLo
wer
Nogaiskian
Kizikhian
MQR9
Razdolian
MQR8
Scoro-dumian
Sarykulian
Morosovian
Khapro-vian
Podpusk-Lebiazhian
Pse-kupian
Neog
ene
Plio
cene
Uppe
rAk
chag
ylia
n
860?
A.pliocaenicus P.ternopolitanus
Chumla-kian II
MQR10 P.ternopolitanus A.deucalion
Subzones
P.protoeconomus P.pannonicus
S.hintoni - Lagurodon arankae
S. gregalis - M.intermedius
S. gregaloides
P.pannonicus A.pliocaenicus
Size of vole teeth
Length of М/1 of recent M. (Stenocranius) gregalis from West-Siberian Plain
Length of М/1 of M. (Stenocranius) gregalis from the Neopleistocene and Holocene localities of the Trans-Urals
Length of М/1 of M. (Stenocranius) gregalis and L. lagurus from Neopleistocene and Holocene localities of the Trans-Urals
Rs=0.973P=0.0002
Paleoclimatic conditions in West-Siberian Plain (according to Arkhipov, 1994) and the position of studied faunas
Length of М/1 of M. (Stenocranius) gregalis and L. lagurus from Neopleistocene and Holocene localities of the Trans-Urals compared to
the climatic changes
Species content
Landscape characteristic of Pleistocene faunas of West-Siberian Plain
Correlation of vole species ratio in local faunas of the Late Neopleistocene from Trans-Urals with the longitude
and altitude of the site
Conclusions• 1. The common patterns of arvicolid
teeth evolution allow to reveal the reliable chronostratigraphic markers for the correlation of MQ zones of different regions within at least the central part and north of Eurasia. MQ subzones to a greater extent reflect the regional character of geological and biological events in Quaternary.
• 2. The changes of teeth size could be considered as biochronological markers in only cases when they are not a direct result of the environmental influence. Teeth size of Neopleistocene M. gregalis and L. lagurus can not be adopted as biochronologic markers for the Urals and West-Siberian Plain because they were directly influenced by the climatic changes.
• 3. The identification of the correct chronological stages of the changes in species content of small mammal faunas is only possible when we take into account the gradient of climatic conditions both in latitudinal, longitudinal and altitudinal directions.
Thank you for attention