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2019 | 64 | 4 |
Tytuł artykułu

The last erythrosuchid - a revision of Chalishevia cothurnata from the late Middle Triassic of European Russia

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Erythrosuchidae is a clade of early archosauriform reptiles that were large-bodied, hypercarnivorous, possibly apex predators in late Early and Middle Triassic ecosystems following the Permo-Triassic mass extinction. Chalishevia cothurnata from the late Middle Triassic (Ladinian) of Russia, is the stratigraphically youngest known erythrosuchid species, but the holotype and referred material of this taxon has received little study. Here, we provide the first detailed anatomical description of C. cothurnata, including comparisons to other erythrosuchids. Although known from relatively fragmentary material, the anatomy of C. cothurnata is distinctive, including an autapomorphic strongly slanted ventral border of the antorbital fossa. The presence of a large accessory opening (the “accessory antorbital fenestra”) in the skull between the premaxilla, nasal and maxilla, together with the inferred presence of a narrow postnarial process of the premaxilla that articulated with a slot on the nasal, provides strong evidence for a sister taxon relationship between C. cothurnata and the erythrosuchid Shansisuchus shansisuchus from the early Middle Triassic (Anisian) of China. The inferred basal skull length of C. cothurnata was approximately 80 cm, making it one of the largest erythrosuchids known.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
64
Numer
4
Opis fizyczny
p.757–774,fig.,ref.
Twórcy
autor
  • School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
  • Borissiak Paleontological Institute RAS, Profsoyuznaya 123, Moscow 117647, Russia; Kazan Federal University, Institute of Geology and Petroleum Technologies, Kremlyovskaya str. 4, Kazan 420008, Russia
autor
  • School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; Sección Paleontología de Vertebrados, CONICET-Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Ángel Gallardo 470 (C1405DJR), Buenos Aires, Argentina
autor
  • Department of Life Sciences, The Natural History Museum, London SW7 5BD, UK
Bibliografia
  • Battail, B. and Surkov, M.V. 2000. Mammal-like reptiles from Russia. In: M.J. Benton, E.N. Kurochkin, M.A. Shishkin, and D.M. Unwin (eds.), The Age of Dinosaurs in Russia and Mongolia, 86–119. Cambridge University Press, Cambridge.
  • Bertin, T.J., Thivichon-Prince, B., LeBlanc, A.R., Caldwell, M.W., and Viriot, L. 2018. Current perspectives on tooth implantation, attachment, and replacement in Amniota. Frontiers in Physiology 9: 1630.
  • Butler, R.J., Ezcurra, M.D., Liu, J., Sookias, R.B., and Sullivan, C. 2019. The anatomy and phylogenetic position of the erythrosuchid archosauriform Guchengosuchus shiguaiensis from the earliest Middle Triassic of China. PeerJ 7: e6435.
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  • Dilkes, D.W. 1998. The Early Triassic rhynchosaur Mesosuchus browni and the interrelationships of basal archosauromorph reptiles. Philosophical Transactions of the Royal Society of London B 353: 501–541.
  • Ezcurra, M.D. 2016. The phylogenetic relationships of basal archosauromorphs, with an emphasis on the systematics of proterosuchian archosauriforms. PeerJ 4: e1778.
  • Ezcurra, M.D. and Butler, R.J. 2015. Post-hatchling cranial ontogeny in the Early Triassic diapsid reptile Proterosuchus fergusi. Journal of Anatomy 226: 387–402.
  • Ezcurra, M.D., Butler, R.J., and Gower, D.J. 2013. “Proterosuchia”: the origin and early history of Archosauriformes. In: S.J. Nesbitt, J.B. Desojo, and R.B. Irmis (eds.), Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and Their Kin. Geological Society of London, Special Publications 379: 9–33.
  • Ezcurra, M.D., Gower, D.J, Sennikov, A.G., and Butler, R.J. 2019. The osteology of the holotype of the early erythrosuchid Garjainia prima Ochev, 1958 (Diapsida: Archosauromorpha) from the upper Lower Triassic of European Russia. Zoological Journal of the Linnean Society 185: 717–783.
  • Ezcurra, M.D., Lecuona, A., and Martinelli, A. 2010. A new basal archosauriform diapsid from the Lower Triassic of Argentina. Journal of Vertebrate Paleontology 30: 1433–1450.
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  • Gower, D.J. 2003. Osteology of the early archosaurian reptile Erythrosuchus africanus Broom. Annals of the South African Museum 110: 1–84.
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  • Gower, D.J. and Sennikov, A.G. 2000. Early archosaurs from Russia. In: M.J. Benton, E.N. Kurochkin, M.A. Shishkin, and D.M. Unwin (eds.), The Age of Dinosaurs in Russia and Mongolia, 140–159. Cambridge University Press, Cambridge.
  • Gower, D.J., Hancox, P.J., Botha-Brink, J., Sennikov, A.G., and Butler, R.J. 2014. A new species of Garjainia Ochev, 1958 (Diapsida: Archosauriformes: Erythrosuchidae) from the Early Triassic of South Africa. PLoS ONE 9: e111154.
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  • Liu, J. and Sullivan, C. 2017. New discoveries from the Sinokannemeyeria–Shansisuchus Assemblage Zone: 3. Archosauriformes from Linxian, Shanxi, China. Vertebrata PalAsiatica 55: 110–128.
  • Modesto, S.P. and Sues, H.-D. 2004. The skull of the Early Triassic archosauromorph reptile Prolacerta broomi and its phylogenetic significance. Zoological Journal of the Linnean Society 140: 335–351.
  • Novikov, I.V. and Shishkin, M.A. 2000. Triassic chroniosuchians (Amphibia, Anthracosauromorpha) and the evolution of the trunk dermal ossifications in the bystrowianids. Paleontological Journal 34 (Supplement): S165–S178.
  • Ochev, V.G. [Očev, V.G.] 1980. New archosaurs from the Middle Triassic of the southern Cis-Urals [in Russian]. Paleontologičeskij žurnal 1980 (2): 101–107.
  • Ochev, V.G. [Očev, V.G.] 1986. On Middle Triassic reptiles of the southern Cis-Urals [in Russian]. Ežegodnik Vsesoûznogo Paleontologisčeskogo Obŝestva 29: 171–180.
  • Sennikov, A.G. 1995. Early thecodonts of Eastern Europe [in Russian]. Trudy Paleontologičeskogo Instituta RAN 263: 1–141.
  • Sennikov, A.G. 2008. Subclass Archosauromorpha [in Russian]. In: M.F. Ivahnenko and E.N. Kuročkin (eds.), Iskopaemye pozvonočnye Rossii i sopredel'nyh stran: Iskopaemye reptilii i pticy. Čast' 1, 266–318. GEOS, Moskva.
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  • Wang, R., Xu, S., Wu, X., Li, C., and Wang, S. 2013. A new specimen of Shansisuchus shansisuchus Young, 1964 (Diapsida: Archosauriformes) from the Triassic of Shanxi, China. Acta Geologica Sinica 87: 1185–1197.
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Typ dokumentu
Bibliografia
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Identyfikator YADDA
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