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2019 | 64 | 1 |

Tytuł artykułu

Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Treść / Zawartość

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
Clevosaurus was an early sphenodontian, known from many specimens and species from the Late Triassic and Early Jurassic. Here we describe and compare the cranial morphology of Clevosaurus hudsoni, the type species, and Clevosaurus cambrica, both from the UK, based on digital reconstructions from segmented CT scan data of two skulls. C. hudsoni has been described in some detail, but the CT data reveal new information on cranial anatomy, and C. cambrica is a newly described species for which the CT scans enable us to identify many previously undescribed bones, re-identify bones whose identity had previously been uncertain, and refine certain cranial elements. The near complete preservation of the left side of the skull of C. cambrica, and the preservation of much of the left side of the skull of C. hudsoni, provided us with the opportunity to fully reconstruct both species’ skulls in three dimensions. For the first time, coronoid bones are identified in Clevosaurus species from the British Isles. These two species show the diversity of morphology in the genus Clevosaurus. We provide evidence for two morphotypes of C. hudsoni based on study of the dentary dentition of the syntypes and other attributed specimens.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

64

Numer

1

Opis fizyczny

p.41-64,fig.,ref.

Twórcy

  • School of Earth Sciences, University of Bristol, Bristol, BS8 1TF, UK
  • School of Earth Sciences, University of Bristol, Bristol, BS8 1TF, UK
autor
  • School of Earth Sciences, University of Bristol, Bristol, BS8 1TF, UK

Bibliografia

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  • Herrera-Flores, J., Stubbs, T.L., Elsler, J.A., and Benton, M. J. 2018. Taxonomic reassessment of Clevosaurus latidens Fraser, 1993 (Lepidosauria, Rhynchocephalia) and rhynchocephalian phylogeny based on parsimony and Bayesian inference. Journal of Paleontology 94: 734–742.
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Typ dokumentu

Bibliografia

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