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Article: A new rhynchocephalian from the British Upper Trias

Publication: Palaeontology
Volume: 25
Part: 4
Publication Date: November 1982
Page(s): 709 725
Author(s): N. C. Fraser
Addition Information

How to Cite

FRASER, N. C. 1982. A new rhynchocephalian from the British Upper Trias. Palaeontology25, 4, 709–725.

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The Palaeontological Association (Free Access)


The skull of a new fossil reptile, Planocephalosaurus robinsonae gen. et sp. nov., is described and its affinities discussed. The description is based on approximately 750 isolated skull bones recovered from Triassic fissure infills in Carboniferous Limestone in the Bristol Channel area. The skull is diapsid, although there is usually a small gap present in the lower temporal bar. Further evidence that an incomplete lower temporal bar is not a uniquely squamate character is provided. The new reptile is compared with the eosuchians and the taxonomic position of the family Sphenodontidae is reviewed.
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