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...

Université de Fribourg

Calibration uncertainty in molecular dating analyses: there is no substitute for the prior evaluation of time priors

Warnock, Rachel C. M. ; Parham, James F. ; Joyce, Walter G. ; Lyson, Tyler R. ; Donoghue, Philip C. J.

In: Proceedings of the Royal Society of London B: Biological Sciences, 2015, vol. 282, no. 1798, p. 20141013

Calibration is the rate-determining step in every molecular clock analysis and, hence, considerable effort has been expended in the development of approaches to distinguish good from bad calibrations. These can be categorized into a priori evaluation of the intrinsic fossil evidence, and a posteriori evaluation of congruence through cross-validation. We contrasted these competing approaches and...