Teumbaita sulcognathus, a new Rhynchosaur from the Late Triassic of Brazil

Another late 2010 paper.  I like the detailed locality data given showing the local stratigraphic position of specimens collected from these areas.

Montefeltro, F. C., Langer, M. C., and C. L. Schultz. 2010. Cranial anatomy of a new genus of hyperodapedontine rhynchosaur (Diapsida, Archosauromorpha) from the Upper Triassic of southern Brazil. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 101: 27–52. DOI: 10.1017/S1755691010009060

Abstract - Detailed description of the cranial anatomy of the rhynchosaur previously known as Scaphonyx sulcognathus allows its assignment to a new genus Teyumbaita. Two nearly complete skulls and a partial skull have been referred to the taxon, all of which come from the lower part of the Caturrita Formation, Upper Triassic of Rio Grande do Sul, southern Brazil. Cranial autapomorphies of Teyumbaita sulcognathus include anterior margin of nasal concave at midline, prefrontal separated from the ascending process of the maxilla, palatal ramus of pterygoid expanded laterally within palatines, dorsal surface of exoccipital markedly depressed, a single tooth lingually displaced from the main medial tooth-bearing area of the maxilla, and a number of other characters (such as skull broader than long; a protruding orbital anterior margin; anguli oris extending to anterior ramus of the jugal; bar between the orbit and the lower temporal fenestra wider than 0·4 of the total orbital opening; mandibular depth reaching more than 25 of the total length) support its inclusion in Hyperodapedontinae. T. sulcognathus is the only potential Norian rhynchosaur, suggesting that the group survived the end-Carnian extinction event.

Bentonyx sidensis, a new Rhynchosaur from the Middle Triassic of England

A note in the newest issue of the Journal of Vertebrate Paleontology reviews the type and referred material of the rhynchosaur Fodonyx spenceri and concludes that a referred skull actually belongs to a new taxon. This new taxon is named Bentonyx sidensis in honor of Professor Mike Benton of the University of Bristol, and authority on rhynchosaurs and a mentor to many students of the Triassic. You can read more about this is a recent post by David Hone, the third author on this paper.

I would like to congratulate Mike regarding this honor, especially in having the member of a taxon so dear to him named accordingly.

Langer, M. C. , Montefeltro, F. C. , Hone, D. E. , Whatley, R. and C. L. Schultz. 2010. On Fodonyx spenceri and a new rhynchosaur from the Middle Triassic of Devon. Journal of Vertebrate Paleontology 30:1884 — 1888.  DOI: 10.1080/02724634.2010.521901