Proterochampsinae, Müller, 2025

Müller, Rodrigo T., 2025, A new proterochampsid archosauriform from the Middle-Upper Triassic of Southern Brazil, Acta Palaeontologica Polonica 70 (1), pp. 7-16 : 9

publication ID

https://doi.org/10.4202/app.01204.2024

DOI

https://doi.org/10.5281/zenodo.17259157

persistent identifier

https://treatment.plazi.org/id/0393879A-AA78-BA0D-FC85-0AE2FBA2F871

treatment provided by

Felipe

scientific name

Proterochampsinae
status

nov.

Clade Proterochampsinae nov.

Type genus: Proterochampsa Reig, 1959 .

Definition.—Most inclusive clade including Proterochampsa barrionuevoi Reig, 1959 , but not Cerritosaurus binsfeldi Price, 1946 , nor Rhadinosuchus gracilis Huene, 1938 .

Diagnosis.—Ratio between the maximum width of the skull and length of the presacral vertebral column 0.336 –0.440; distinct coarse ornamentation on lateral surface of the surangular and angular; in medial view, the area ventral to the internal mandibular fenestra showing a larger contribution from the angular bone compared to the prearticular, or both bones contribute equally; prearticular with ventral margin posterior to its contact with the splenial straight or ventrally curved on the anterior half of the bone in medial or lateral view; and presence of ventral keel on ninth presacral vertebral centrum.

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