Skip to main content
    • Aa
    • Aa
  • Get access
    Check if you have access via personal or institutional login
  • Cited by 7
  • Cited by
    This article has been cited by the following publications. This list is generated based on data provided by CrossRef.

    Ezcurra, Martín D. Montefeltro, Felipe and Butler, Richard J. 2016. The Early Evolution of Rhynchosaurs. Frontiers in Ecology and Evolution, Vol. 3,

    Schultz, Cesar Leandro Langer, Max Cardoso and Montefeltro, Felipe Chinaglia 2016. A new rhynchosaur from south Brazil (Santa Maria Formation) and rhynchosaur diversity patterns across the Middle-Late Triassic boundary. Paläontologische Zeitschrift,

    Butler, Richard J. Ezcurra, Martín D. Montefeltro, Felipe C. Samathi, Adun and Sobral, Gabriela 2015. A new species of basal rhynchosaur (Diapsida: Archosauromorpha) from the early Middle Triassic of South Africa, and the early evolution of Rhynchosauria. Zoological Journal of the Linnean Society, Vol. 174, Issue. 3, p. 571.

    Nesbitt, Sterling J. Flynn, John J. Pritchard, Adam C. Parrish, J. Michael Ranivoharimanana, Lovasoa and Wyss, André R. 2015. Postcranial Osteology ofAzendohsaurus madagaskarensis(?Middle to Upper Triassic, Isalo Group, Madagascar) and its Systematic Position Among Stem Archosaur Reptiles. Bulletin of the American Museum of Natural History, Vol. 398, p. 1.

    Ezcurra, Martín D. Trotteyn, M. Jimena Fiorelli, Lucas E. von Baczko, M. Belén Taborda, Jeremías R. A. Iberlucea, Maximiliano and Desojo, Julia B. 2014. The oldest rhynchosaur from Argentina: a Middle Triassic rhynchosaurid from the Chañares Formation (Ischigualasto–Villa Unión Basin, La Rioja Province). Paläontologische Zeitschrift, Vol. 88, Issue. 4, p. 453.

    Mukherjee, Debarati Ray, Sanghamitra and Benson, Roger 2014. A newHyperodapedon(Archosauromorpha, Rhynchosauria) from the Upper Triassic of India: implications for rhynchosaur phylogeny. Palaeontology, Vol. 57, Issue. 6, p. 1241.

    Montefeltro, Felipe Chinaglia Bittencourt, Jonathas Souza Langer, Max Cardoso and Schultz, Cesar Leandro 2013. Postcranial anatomy of the hyperodapedontine rhynchosaurTeyumbaita sulcognathus(Azevedo and Schultz, 1987) from the Late Triassic of Southern Brazil. Journal of Vertebrate Paleontology, Vol. 33, Issue. 1, p. 67.

  • Earth and Environmental Science Transactions of the Royal Society of Edinburgh, Volume 101, Issue 1
  • December 2010, pp. 27-52

Cranial anatomy of a new genus of hyperodapedontine rhynchosaur (Diapsida, Archosauromorpha) from the Upper Triassic of southern Brazil

  • Felipe Chinaglia Montefeltro (a1), Max Cardoso Langer (a1) and Cesar Leandro Schultz (a2)
  • DOI:
  • Published online: 20 December 2010

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.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Earth and Environmental Science Transactions of The Royal Society of Edinburgh
  • ISSN: 1755-6910
  • EISSN: 1755-6929
  • URL: /core/journals/earth-and-environmental-science-transactions-of-royal-society-of-edinburgh
Please enter your name
Please enter a valid email address
Who would you like to send this to? *