The taxonomy and anatomy of rauisuchian archosaur from the Late Triassic of Germany and Poland

• Autorzy: Brusatte S L , Butler R.J. , Sulej T. , Niedzwiedzki G.
• Języki publikacji: EN

Abstrakty

EN

The German Late Triassic archosaur Teratosaurus suevicus is a historically important taxon, being the first described rauisuchian. Unfortunately the holotype is a single element, a maxilla, which is poorly preserved and incomplete. We redescribe this maxilla and identify a single potential autapomorphy. The fragmentary type specimen complicates attempts to refer additional material to this taxon, and other unassociated archosaur and rauisuchian specimens from the Mittlerer Stubensandstein of Germany cannot be referred to T. suevicus with any degree of confidence. The stratigraphically older T. silesiacus, from the upper Carnian of Poland, is represented by a much more complete and better preserved specimen. Comparison of the maxillae of T. suevicus and T. silesiacus reveals that the two are distinct taxa, contra recent suggestions, but also that they do not share any synapomorphies or a unique combination of characters relative to Postosuchus kirkpatricki and other rauisuchians. Thus, the Polish material must be transferred to a new genus, Polonosuchus gen. nov. Both Polonosuchus and Teratosaurus are very similar to Postosuchus kirkpatricki, and the three taxa are likely closely related.

Słowa kluczowe

EN

taxonomy; paleontology; rauisuchian archosaur; archosaur; Late Triassic; Germany; Poland; Teratosaurus suevicus; Teratosaurus silesiacus; Postosuchus kirkpatricki; Polonosuchus; Archosauria; Rauisuchia; Triassic; anatomy

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2009
• Tom: 54
• Numer: 2
• Opis fizyczny: p.221-230,fig.,ref.

Twórcy

autor

Brusatte S L

• Department of Earth Sciences, University of Bristol, Queens Road, Bristol, BS8 1RJ, U.K.

autor

Butler R.J.

autor

Sulej T.

autor

Niedzwiedzki G.

Bibliografia

• Alcober, O. 2000. Redescription of the skull of Saurosuchus galilei (Archosauria: Rauisuchidae). Journal of Vertebrate Paleontology 20: 302–316.
• Alcober, O. and Parrish, J.M. 1997. A new poposaurid from the Upper Triassic of Argentina. Journal of Vertebrate Paleontology 17: 548–556.
• Barberena, M.C. 1978. A huge thecodont skull from the Triassic of Brazil. Pesquisias 7: 111–129.
• Benton, M.J. 1986. The Late Triassic reptile Teratosaurus—a rauisuchian, not a dinosaur. Palaeontology 29: 293–301.
• Bonaparte, J.F. 1981. Descripción de “Fasolasuchus tenax” y su significado en la sistemática y evolución de los Thecodontia. Revista del Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” 3: 55–101.
• Brusatte, S.L. and Sereno, P.C. 2007. A new species of Carcharodontosaurus (Dinosauria: Theropoda) from the Cenomanian of Niger and a revision of the genus. Journal of Vertebrate Paleontology 27: 902–916.
• Brusatte, S.L., Benson, R.B.J., Carr, T.D., Williamson, T.E., and Sereno, P.C. 2007. The systematic utility of theropod enamel wrinkles. Journal of Vertebrate Paleontology 27: 1052–1056.
• Brusatte, S.L., Benton, M.J., Desojo, J.B., and Langer, M.C. (in press). The higher−level phylogeny of Archosauria (Tetrapoda: Diapsida). Journal of Systematic Palaeontology.
• Brusatte, S., Benton, M., Ruta, M., and Lloyd, G. 2008. The evolutionary history and higher−level phylogeny of Archosauria (Tetrapoda: Diapsida). Journal of Vertebrate Paleontology 28: 58A.
• Chatterjee, S. 1985. Postosuchus, a new thecodontian reptile from the Triassic of Texas and the origin of tyrannosaurs. Philosophical Transactions of the Royal Society of London, B 309: 395–460.
• Chatterjee, S. and Majumdar, P.K. 1987. Tikisuchus romeri, a new rauisuchid reptile from the Late Triassic of India. Journal of Paleontology 61: 787–793.
• Dzik, J. 2001. A new Paleorhinusfauna in the early Late Triassic of Poland. Journal of Vertebrate Paleontology 21: 624–627.
• Dzik, J. 2003. A beaked herbivorous archosaur with dinosaur affinities from the early Late Triassic of Poland. Journal of Vertebrate Paleontology 23: 556–574.
• Dzik, J. and Sulej, T. 2007. A review of the early Late Triassic Krasiejów biota from Silesia, Poland. Palaeontologia Polonica 64: 3–27.
• Edmund, A.G. 1960. Tooth replacement phenomena in the lower vertebrates. Royal Ontario Museum, Life Science Division, Contributions 52: 1–190.
• Galton, P.M. 1985. The poposaurid thecodontian Teratosaurus suevicus v. Meyer plus referred specimens mostly based on prosauropod dinosaurs from the Middle Stubensandstein (Upper Triassic) of Nordwürttemberg. Stuttgarter Beiträge zur Naturkunde, Serie B (Geologie und Palaeontologie) 116: 1–29.
• Gower, D.J. 1999. Cranial osteology of a new rauisuchian archosaur from the Middle Triassic of southern Germany. Stuttgarter Beiträge zur Naturkunde, Serie B (Geologie und Palaeontologie) 280: 1–49.
• Gower, D.J. 2000. Rauisuchian archosaurs (Reptilia, Diapsida): An overview. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 218: 447–488.
• Gower, D.J. and Nesbitt, S.J. 2006. The braincase of Arizonasaurus babbitti—further evidence for the non−monophyly of rauisuchians. Journal of Vertebrate Paleontology 26: 79–87.
• Gower, D.J. and Schoch, R.R. 2009. Postcranial anatomy of the rauisuchian archosaur Batrachotomus kupferzellensis. Journal of Vertebrate Paleontology 29: 103–122.
• Gower, D.J. and Wilkinson, M. 1996. Is there any consensus on basal archosaur phylogeny? Proceedings of the Royal Society of London Series B 263: 1399–1406.
• Huene, F. 1942. Die fossilien Reptilien des Südamerikanishen Gondwanalandes. Ergebnisse der Sauriergrabungen in Südbrasilien, 1928/1929. 332 pp. C.H. Beck, München.
• Irmis, R.B. 2007. Axial skeleton ontogeny in the Parasuchia (Archosauria: Pseudosuchia) and its implications for ontogenetic determination in archosaurs. Journal of Vertebrate Paleontology 27: 350–361.
• Jalil, N.−E. and Peyer, K. 2007. A new rauisuchian (Archosauria, Suchia) from the Upper Triassic of the Argana Basin, Morocco. Palaeontology 50: 417–430.
• Krebs, B. 1965. Die Triasfauna der Tessiner Kalkalpen. XIX. Ticinosuchus ferox nov. gen. nov. sp. . Schweizerische Paläontologische Abhandlungen 81: 1–140.
• Li, C., Wu, X.−C., Cheng, Y.−N., Sato, T., and Wang, L. 2006. An unusual archosaurian from the marine Triassic of China. Naturwissenschaften 93: 200–206.
• Long, R.A, and Murry, P.A. 1995. Late Triassic (Carnian and Norian) tetrapods from the southwestern United States. New Mexico Museum of Natural History and Science Bulletin 4: 1–254.
• Lucas, S.G., Spielmann, J.A., and Hunt, A.P. 2007. Biochronological significance of Late Triassic tetrapods from Krasiejów, Poland. In: S.G. Lucas and J.A. Spielmann (eds.), The Global Triassic. New Mexico Museum of Natural History and Science Bulletin 41: 248–258.
• Meyer, H. von 1861. Reptilien aus dem Stubensandstein des oberen Keupers. Palaeontographica 7: 253–346.
• Nesbitt, S.J. 2003. Arizonasaurus and its implications for archosaur divergence. Proceedings of the Royal Society of London Series B (Supplement to No. 270): S234–S237.
• Nesbitt, S.J. 2005. Osteology of the Middle Triassic pseudosuchian archosaur Arizonasaurus babbitti. Historical Biology 17: 19–47.
• Nesbitt, S.J. 2007. The anatomy of Effigia okeeffeae (Archosauria, Suchia), theropod−like convergence, and the distribution of related taxa. Bulletin of the American Museum of Natural History 302: 1–84.
• Nesbitt, S.J. and Norell, M.A. 2006. Extreme convergence in the body plans of an early suchian (Archosauria) and ornithomimid dinosaurs (Theropoda). Proceedings of the Royal Society of London Series B 273: 1045–1048.
• Sen, K. 2005. A new rauisuchian archosaur from the Middle Triassic of India. Palaeontology 48: 185–196.
• Sill, W.D. 1974. The anatomy of Saurosuchus galilei and the relationships of the rauisuchid thecodonts. Bulletin of the Museum of Comparative Zoology 146: 317–362.
• Sulej, T. 2002. Species discrimination on the Late Triassic temnospondyl amphibian Metoposaurus diagnosticus. Acta Palaeontologica Polonica 47: 535–546.
• Sulej, T. 2005. A new rauisuchian reptile (Diapsida: Archosauria) from the Late Triassic of Poland. Journal of Vertebrate Paleontology 25: 78–86.
• Sulej, T. 2007. Osteology, variability and evolution of Metoposaurus, a temnospondyl from the Late Triassic of Poland. Palaeontologia Polonica 64: 29–139.
• Sulej, T. (in press). The skull of an early Late Triassic aetosaur and the evolution of the stagonolepidid archosaurian reptiles. Zoological Journal of the Linnean Society.
• Sulej, T. and Majer, D. 2004. The temnospondyl amphibian Cyclotosaurus from the Late Triassic of Poland. Palaeontology 48: 157–170.
• Weinbaum, J.C. and Hungerbühler, A. 2007. A revision of Poposaurus gracilis (Archosauria: Suchia) based on two new specimens from the Late Triassic of the southwestern U.S.A. Palaeontologische Zeitschrift 81: 131–145.
• Wilkinson, M. 1994. Common cladistic information and its consensus representations: reduced Adams and reduced cladistic consensus trees and profiles. Systematic Biology 43: 343–368.
• Witmer, L.M. 1997. The evolution of the antorbital cavity of archosaurs: a study in soft−tissue reconstruction in the fossil record with analysis of the function of pneumaticity. Society of Vertebrate Paleontology Memoir 3: 1–73.