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Phylogenetic diversity through deep time: an exploration using Mesozoic dinosaurs
Graeme T. Lloyd @GraemeTLloydDavid W. Bapst @dwbapst
Matt Friedman @Friedman_LabKatie E. Davis @drkatiedavis
Caveat emptor
Caveat emptor
Biodiversity
Biodiversity
Suezichthys n. sp.
Biodiversity
Suezichthys n. sp.
Palaeobiodiversity
Palaeobiodiversity
Time (Ma)
Sepkoski 2002
Palaeobiodiversity
Time (Ma)
Sepkoski 2002; Foote 1994
The problem
The problem
=
The problem
5 spp. 5 spp.
PD as a solution?
PD as a solution?
Fritz and Purvis 2010
Limiting factor
Largest fossil-only phylogenies
Pisani et al. 2002; Lloyd et al. 2008
Updated phylogenetic hypothesis
Updated phylogenetic hypothesis
100 trees
Temporal data
Results
Results: DinosauriaPD
(m.y.
)
Time (Ma)
Results: OrnithischiaPD
(m.y.
)
Time (Ma)
Results: TheropodaPD
(m.y.
)
Time (Ma)
Results: SauropodomorphaPD
(m.y.
)
Time (Ma)
Roots: Ornithischia
Roots: Theropoda
Roots: Sauropodomorpha
Roots: Dinosauria
Roots: Dinosauria
K-Pgreset
Correlation with richness
Correlation with richness
Correlation with richness
Mean = 0.92
Correlation with richness
Mean = 0.92
Correlation with richness
Mean = 0.92
Still to do
Still to do
cal3
Still to do
cal3
Still to do
cal3
Still to do
cal3
Conclusions
Conclusions
Conclusions
Conclusions
Conclusions
