Angistorhinus

{{Short description|Extinct genus of reptiles}}

{{Automatic taxobox

| fossil_range = {{Fossil range|237|208.5}}

| image = Angistorhinus.JPG

| image_caption = Angistorhinus skull

| image_upright = 1.15

| taxon = Angistorhinus

| authority = Mehl, 1913

| subdivision_ranks = Species

| subdivision =

• {{extinct}}A. grandis Mehl, 1913 (type)
• {{extinct}}? A. talainti Dutuit, 1977

}}

File:Angistorhinus grandis.jpg

Angistorhinus (meaning "narrow snout" or "hook snout") is an extinct genus of phytosaur known from the Late Triassic period of Texas and Wyoming, United States. It was first named by Mehl in 1913 and the type species is Angistorhinus grandis.{{cite journal|author=Mehl, M. G. |year=1913 |title=Angistorhinus, a new genus of Phytosauria from the Trias of Wyoming |journal=Journal of Geology |volume=21 |issue=2 |pages=186–191 |doi=10.1086/622049|bibcode=1913JG.....21..186M |s2cid=129008996 |url=https://zenodo.org/record/1431453 }} Other species from Texas and Wyoming, A. alticephalus (Stovall and Wharton, 1936), A. gracilis (Mehl, 1915) and A. maximus (Mehl, 1928), are cospecific with the type species.{{cite journal|author=S. G. Lucas|author2=A. B. Heckert|author3=R. Kahle|name-list-style=amp |year=2002 |title=Postcranial anatomy of Angistorhinus, a Late Triassic phytosaur from West Texas |editor=A. B. Heckert |editor2=S. G. Lucas |journal=Upper Triassic Stratigraphy and Paleontology, New Mexico Museum of Natural History and Science Bulletin |volume=21 |pages=157–164 }} Angistorhinus is known from the holotype UC 631, partial skull and lower jaws recovered from the Popo Agie Formation, Chugwater Group, Wyoming and from the associated paratype UM 531, a partial skull, TMM 31098-1, skull and lower jaws and ROM 7977, partial skull and lower jaws, recovered from the 'Pre-Tecovas Horizon' in the Dockum Group, Texas. A possible second species, A. talainti is known from the Triassic of Morocco.{{cite journal|author=Dutuit, J.-M. |year=1977 |title=Description du craˆne de Angistorhinus talainti n. sp. un nouveau Phytosaure du Trais atlasique marocain |journal=Bulletin du Muséum National d'Histoire Naturelle |volume=3 |issue=489 |pages=297–336 }} In 1995, Long and Murry created the new combination, Angistorhinus megalodon by synonymy for Brachysuchus.{{cite journal|author=Long, R. A.|author2=Murry, P. A.|name-list-style=amp |year=1995 |title=Late Triassic (Carnian and Norian) tetrapods from the southwestern United States |journal=Bulletin of the New Mexico Museum of Natural History and Science |volume=4 |pages=1–254 }} Hungerbühler and Sues (2001) hypothesised that Angistorhinus is a junior synonym of Rutiodon.{{cite journal|author=Hungerbühler, A.|author2=Sues, H.-D.|name-list-style=amp |year=2001 |title=Status and phylogenetic relationships of the Late Triassic phytosaur Rutiodon carolinensis |journal=Journal of Vertebrate Paleontology |volume=21|issue = 3 Suppl |pages=64A | doi = 10.1080/02724634.2001.10010852|s2cid=220414868}} However, in 2010 Michelle R. Stocker retained the validity of Brachysuchus and of A. grandis.{{cite journal|author=Michelle R. Stocker |year=2010 |title=A new taxon of phytosaur (Archosauria: Pseudosuchia) from the Late Triassic (Norian) Sonsela Member (Chinle Formation) in Arizona, and a critical reevaluation of Leptosuchus Case, 1922 |journal=Palaeontology |volume=53 |issue=5 |pages=997–1022 |doi=10.1111/j.1475-4983.2010.00983.x |s2cid=83536253 |doi-access=free }}