DOI: 10.5061/dryad.bnzs7h4j3
title: Biotic and abiotic factors and the phylogenetic structure of extinction in the evolution of Tethysuchia

description: Crocodylomorpha is a large and diverse clade with a long evolutionary
 history now restricted to modern crocodylians. Tethysuchia is a
 less-inclusive clade of semi-amphibious taxa that crossed two biological
 crises: the second Oceanic Anoxic Event (OAE 2) and the
 Cretaceous/Paleogene (K/Pg) Crisis. Numerous studies have sought to find
 the driving factors explaining crocodylomorph evolution producing
 contradictory conclusions. Studies of included groups may be useful. Here,
 we study factors driving tethysuchian evolution using phylogenetically
 informed statistical analyses. First, we tested the phylogenetic structure
 of tethysuchian extinction at the OAE 2 and K/Pg crises. We then used
 phylogenetic comparative methods to test the influence of intrinsic (body
 size, snout proportion) and extrinsic (temperature, paleolatitude) factors
 on the evolution of tethysuchian diversity at the OAE 2 and the K/Pg
 crises. Finally, we tested whether temperature influenced the evolution of
 body size. We conclude that (1) extinction was not random in regards to
 phylogeny for Tethysuchia at the OAE 2 and K/Pg crises; (2) while an
 important tethysuchian turnover follows OAE 2, the K/Pg crisis was
 followed by an explosion in diversity of tethysuchians, probably linked to
 the colonization of emptied ecological niches; (3) tethysuchians lived in
 warmer environments after the OAE 2 crisis, possibly because of both
 global warming and latitude distribution shifts; (4) there is a
 significant change of snout proportion after the OAE 2 and the K/Pg
 crises, likely caused by niche partitioning; and (5) there is a positive
 correlation between body size and temperature, possibly because of a
 longer growth season
description: # Biotic and abiotic factors and the phylogenetic structure of extinction
 in the evolution of Tethysuchia
 Supplementary File 1
 contains all of the raw bibliographical data for each Tethysuchia species
 in our sample (36 species of extinct Tethysuchia). The associated
 bibliography is also provided. Supplementary File 2 contains all of the
 alternative topologies used for the analyses in the following order :
 Jouve 2, Sachs 1 and Sachs 2. Supplementary File 3 contains the R script
 for all analyses. Supplementary File 4 contains the age range tables with
 varying samples used to generate the nexus files. The tables are presented
 in the following order : Jouve age range and Sachs age range.
 Supplementary File 5 contains all of the generated nexus files, which are
 used for all further analyses. The nexus files are presented in the
 following order : Jouve 1, Jouve 2, Sachs 1 and Sachs 2. Supplementary
 File 6 contains all data used to test the phylogenetic distribution of
 Tethysuchia extinction at OAE 2 and K/Pg crises across the phylogeny using
 D-statistic. The tables are presented in the following order : Jouve 1 and
 2 at OAE 2, Sachs 1 and 2 at OAE 2, Jouve 1 and 2 at K/Pg and Sachs 1 and
 2 at K/Pg. Supplementary File 7 contains all data used for testing the
 influence of biologic and climatic factors on Tethysuchia survival after
 OAE 2 and K/Pg crises using Phylogenetic Logistic Regression (PLR). The
 tables are presented in the following order : Jouve 1 and 2 at OAE 2,
 Jouve 1 and 2 at OAE 2 using the alternative coding, Sachs 1 and 2 at OAE
 2, Sachs 1 and 2 at OAE 2 using the alternative coding, Jouve 1 and 2 at
 K/Pg, Jouve 1 and 2 at K/Pg using the alternative coding, Sachs 1 and 2 at
 K/Pg and Sachs 1 and 2 at K/Pg using the lternative coding. Supplementary
 File 8 contains all data used for testing the relationship between body
 size (through skull length) and paleotemperature using the Phylogenetic
 Generalized Least Squares (PGLS). The tables are presented in the
 following order : Jouve Tethysuchia sample, Sachs Tethysuchia sample,
 Jouve Tethysuchia sample using the alternative coding, Sachs Tethysuchia
 sample using the alternative coding, Jouve Pholidosauridae sample, Sachs
 Pholidosauridae sample, Jouve Pholidosauridae sample using the alternative
 coding, Sachs Pholidosauridae sample using the alternative coding, Jouve
 Dyrosauroidea sample and Sachs Dyrosauroidea sample. Supplementary File 9
 contains all data used for testing the relative influence of ecology
 (through paleolatitude and paleotemperature), phylogeny, or the
 combination of both on body size variation (through skull length) using
 the variation partitioning method. The tables are presented in the
 following order : paleotemperature with Jouve sample, paleolatitude with
 Jouve sample, paleotemperature with Sachs sample, paleolatitude with Sachs
 sample, paleotemperature with Jouve sample using the alternative coding,
 paleolatitude with Jouve sample using the alternative coding,
 paleotemperature with Sachs sample using the alternative coding and
 paleolatitude with Sachs sample using the alternative coding.
 Supplementary File 10 contains all of the results tables which are not
 presented in the main document. The results are presented in the following
 order : PLR results obtained with the alternative coding, PGLS results
 obtained with the alternative coding, AICc results obtained with the
 alternative coding and variation partitioning results obtained with the
 alternative coding