Leptosuchomorpha
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Leptosuchomorpha is a clade of phytosaurs. It is a node-based taxon defined by Michelle R. Stocker in 2010 as the last common ancestor of Leptosuchus studeri and Pseudopalatus pristinus and all of its
Leptosuchus gregorii skull
Smilosuchus
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Smilosuchus is an extinct genus of leptosuchomorph parasuchid phytosaurs from the Late Triassic of North America. Three species have been named: the type species S. gregorii, S. adamanensis, and S. li
Leptosuchomorpha
…of its descendants. A new definition was proposed by Andrew S. Jones and Richard J. Butler in 2018 as the last common ancestor and all descendants of Smilosuchus lithodendrorum, Leptosuchus studeri, and Machaeroprosopus pristinus to reflect the new interrelationships of Phytosauria they recovered. Below is a cladogram from…
Smilosuchus gregorii in Smithsonian Museum
Skull of S. gregorii (AMNH FR-3060) on display at the American Museum of Natural History
S. gregorii and S. adamanensis compared to a human