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Université de Fribourg

A toothed turtle from the Late Jurassic of China and the global biogeographic history of turtles

Joyce, Walter G. ; Rab, Márton ; Clark, James M. ; Xu, Xing

In: BMC Evolutionary Biology, 2016, vol. 16, p. 236

Turtles (Testudinata) are a successful lineage of vertebrates with about 350 extant species that inhabit all major oceans and landmasses with tropical to temperate climates. The rich fossil record of turtles documents the adaptation of various sub- lineages to a broad range of habitat preferences, but a synthetic biogeographic model is still lacking for the group.Results: We herein describe a...

Université de Fribourg

The Fossil Calibration Database, A New Resource for Divergence Dating

Ksepka, Daniel T. ; Parham, James F. ; Allman, James F. ; Benton, Michael J. ; Carrano, Matthew T. ; Cranston, Karen A. ; Donoghue, Philip C. J. ; Head, Jason J. ; Hermsen, Elizabeth J. ; Irmis, Randall B. ; Joyce, Walter G. ; Kohli, Manpreet ; Lamm, Kristin D. ; Leehr, Dan ; Patané, Josés L. ; Polly, P. David ; Phillips, Matthew J. ; Smith, N. Adam ; Smith, Nathan D. ; Tuinen, Marcel van ; Ware, Jessica L. ; Warnock, Rachel C. M.

In: Systematic Biology, 2015, vol. 64, no. 5, p. 853-859

Fossils provide the principal basis for temporal calibrations, which are critical to the accuracy of divergence dating analyses. Translating fossil data into minimum and maximum bounds for calibrations is the most important, and often least appreciated, step of divergence dating. Properly justified calibrations require the synthesis of phylogenetic, paleontological, and geological evidence...

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