%0 Journal Article %A Holley, J. Alfredo %A Sterli, Juliana %A Basso, NĂ©stor G. %D 2019 %T Dating the origin and diversification of Pan-Chelidae (Testudines, Pleurodira) under multiple molecular clock approaches: supplementary material %U https://brill.figshare.com/articles/journal_contribution/Dating_the_origin_and_diversification_of_Pan-Chelidae_Testudines_Pleurodira_under_multiple_molecular_clock_approaches_supplementary_material/9928532 %R 10.6084/m9.figshare.9928532.v1 %2 https://brill.figshare.com/ndownloader/files/18667430 %2 https://brill.figshare.com/ndownloader/files/17866631 %2 https://brill.figshare.com/ndownloader/files/17866634 %2 https://brill.figshare.com/ndownloader/files/17866637 %2 https://brill.figshare.com/ndownloader/files/17866640 %2 https://brill.figshare.com/ndownloader/files/17866643 %K divergence time %K FBD model %K molecular clock %K Pan-Chelidae %K tip-dating %K Paleontology %X

Pan-Chelidae (Testudines, Pleurodira) is a group of side-necked turtles with a currently disjointed distribution in South America and Australasia and characterized by two morphotypes: the long-necked and the short-necked chelids. Both geographic groups include both morphotypes, but different phylogenetic signals are obtained from morphological and molecular data, suggesting the monophyly of the long-necked chelids or the independent evolution of this trait in both groups. In this paper, we addressed this conflict by compiling and editing available molecular and morphological data for Pan-Chelidae, and performing phylogenetic and dating analyses over the individual and the combined datasets. Our total-evidence phylogenetic analysis recovered the clade Chelidae as monophyletic and as sister group of a clade of South American extinct chelids; furthermore Chelidae retained inside the classical molecular structure with the addition of extinct taxa in both the Australasian and the South American clades. Our dating results suggest a Middle Jurassic origin for the total clade Pan-Chelidae, an Early Cretaceous origin for Chelidae, a Late Cretaceous basal diversification of both geographic clades with the emergence of long-necked lineages, and an Eocene diversification at genera level, with the emergence of some species before the final breakup of Southern Gondwana and the remaining species after this event.

%I Brill Online