Data for: A short-snouted \"sphenosuchian” with unusual feeding anatomy demonstrates that ecological specialization occurred early in crocodylomorph evolution

The early evolution and diversification of Crocodylomorpha is a key component of vertebrate evolution on land but is somewhat poorly understood as a result of limited data. We describe Eosphorosuchus lacrimosa gen. et sp. nov., an early crocodylomorph from the Late Triassic of Ghost Ranch, New Mexico, whose cranial anatomy is divergent from that of other early crocodylomorphs (including Hesperosuchus agilis, to which it had been tentatively assigned), featuring an unusually short and osteologically reinforced facial region. A robust upper temporal arch and prominent surangular ridge indicate the presence of well-developed superficial external adductor musculature, which is divergent relative to pseudosuchians generally. These autapomorphies suggest specialization for a powerful bite. Bayesian and maximum parsimony phylogenetic analyses find E. lacrimosa outside of an H. agilis clade, near the base of Crocodylomorpha. The specializations of E. lacrimosa therefore represent the beginnings..., , # Data for: A short-snouted \"sphenosuchian” with unusual feeding anatomy demonstrates that ecological specialization occurred early in crocodylomorph evolution

Dataset DOI: [10.5061/dryad.q83bk3jvv](https://doi.org/10.5061/dryad.q83bk3jvv)

## Description of the data and file structure

Data for: A short-snouted “sphenosuchian” with unusual feeding anatomy demonstrates that ecological specialization occurred early in crocodylomorph evolution

### Files and variables

#### File: Appendix1.zip

**Description:** Appendix1 contains YPM VP 41198 uCT scan data.

* VP.041198 scan data.xlsx contains metadata including scan settings. The specimen was uCT scanned three times; column D of the spreadsheet contains metadata for the scan used in this study (collected 2/3/2022). Metadata includes the specimen position (Axes), detector location, power (kV) and current (uA), dimensions of the copper filter used, number of frames and images collected, and number of projections. 
* YPM_VP_41198_02.vgl ...,