3D Jaw Muscles of Revueltosaurus callenderi

This 3D model of the terrestrial, omnivorous crocodylomorph *Revueltosaurus callenderi* (PEFO 34561) from Upper Triassic Chinle Formation of Petrified Forest National Park (Arizona, US, North America) shows the primitive condition of temporal muscles being largely vertically oriented. Read more in the paper on how the evolution of skull shape in crocodilians affected jaw muscle function in Sellers et al (2022) in Anatomical Record: https://doi.org/10.1002/ar.24912. The original descriptions of this awesome fossil can be found here: https://doi.org/10.1098%2Frspb.2004.3047 and here: https://doi.org/10.1002/ar.24757 with thanks to Bill Parker and Adam Marsh (PEFO) for sharing data. Thanks to National Science Foundation 1631684 for supporting the work.