Analysing Thalattosuchia paleobiodiversity under the prism of phylogenetic comparative methods

Thalattosuchia is a particularly diverse group of mostly marine crocodylomorphs that lived during most of the Jurassic and Lower Cretaceous. Previous studies have sought to uncover the factors influencing Crocodylomorph evolution, yielding mixed results, possibly due to Thalattosuchia’s unique ecological niche and controversial phylogenetic placement among Crocodylomorph. Here, we propose a Thalattosuchia-focused study using phylogenetically-informed statistical analyses. First, we tested the phylogenetic structure of thalattosuchian survival at various geological transitions. We then tested the influence of biotic and abiotic factors on thalattosuchian diversity at the aforementioned crises. Finally, we tested whether diet was an additional explanatory factor. We found that (1) thalattosuchian diversification at the Lower-Middle Jurassic transition was phylogenetically structured and associated with signs of snout reduction possibly explained by the colonisation of emptied ecological n..., , , # Data from: Analysing Thalattosuchia paleobiodiversity under the prism of phylogenetic comparative methods

**Supplementary File captions :**

**Supplementary File 1** contains all of the raw bibliographical about the age (file 1-1, sheet 1), biotic and abiotic factors (file 1-1, sheet 2) data for each Thalattosuchia species in our sample (88 species of extinct Thalattosuchia). The associated bibliography is also provided (file 1-2).

**Supplementary File 2** contains the R script for all analyses.

**Supplementary File 3** contains the age range tables with varying samples used to generate the nexus files. The tables are presented in the following order: Thalattosuchia, Teleosauroidea, Metriorhynchoidea

**Supplementary File 4** contains all of the generated nexus files, which are used for all further analyses. The nexus files are presented in the following order : Thalattosuchia, Teleosauroidea, Metriorhynchoidea

**Supplementary File 5** contains all data used to test the phylogenet...