A new species of the sphenodontian reptile Clevosaurus from the Lower Jurassic of South Wales

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Small reptiles from the Early Jurassic Pant 4 fissure fill in Glamorgan, South Wales (St. Bride’s Island, Pant Quarry), were formerly provisionally attributed to three spe- cies of sphenodontian lepidosaurs. A re-analysis, aided by new material, has found this herpeto-fauna to consist almost exclu- sively of a single new species, Clevosaurus convallis sp. nov., with only one specimen referable to Sphenodontia incertae sedis. Clevosaurus is known from the Upper Triassic and Lower Jurassic in various parts of the world, but C. convallis represents the first occurrence of the genus in the Jurassic of Britain. The material is fragmentary but includes numerous premaxillae, maxillae, dentaries and palatines, and the new species is distinguished by the unique combination of six large additional dentary teeth and a very short nasal process of the premaxilla, along with the diagnostic Clevosaurus features.
Original languageEnglish
JournalPalaeontology
Volume48
Issue number4
Pages (from-to)817-831
Number of pages15
ISSN0031-0239
DOIs
Publication statusPublished - 2005
Externally publishedYes
MoE publication typeA1 Journal article-refereed

Cite this

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title = "A new species of the sphenodontian reptile Clevosaurus from the Lower Jurassic of South Wales",
abstract = "Small reptiles from the Early Jurassic Pant 4 fissure fill in Glamorgan, South Wales (St. Bride’s Island, Pant Quarry), were formerly provisionally attributed to three spe- cies of sphenodontian lepidosaurs. A re-analysis, aided by new material, has found this herpeto-fauna to consist almost exclu- sively of a single new species, Clevosaurus convallis sp. nov., with only one specimen referable to Sphenodontia incertae sedis. Clevosaurus is known from the Upper Triassic and Lower Jurassic in various parts of the world, but C. convallis represents the first occurrence of the genus in the Jurassic of Britain. The material is fragmentary but includes numerous premaxillae, maxillae, dentaries and palatines, and the new species is distinguished by the unique combination of six large additional dentary teeth and a very short nasal process of the premaxilla, along with the diagnostic Clevosaurus features.",
author = "Laura S{\"a}il{\"a}",
year = "2005",
doi = "10.1111/j.1475-4983.2005.00486.x",
language = "English",
volume = "48",
pages = "817--831",
journal = "Palaeontology",
issn = "0031-0239",
publisher = "Wiley Blackwell",
number = "4",

}

A new species of the sphenodontian reptile Clevosaurus from the Lower Jurassic of South Wales. / Säilä, Laura.

In: Palaeontology, Vol. 48, No. 4, 2005, p. 817-831.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - A new species of the sphenodontian reptile Clevosaurus from the Lower Jurassic of South Wales

AU - Säilä, Laura

PY - 2005

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AB - Small reptiles from the Early Jurassic Pant 4 fissure fill in Glamorgan, South Wales (St. Bride’s Island, Pant Quarry), were formerly provisionally attributed to three spe- cies of sphenodontian lepidosaurs. A re-analysis, aided by new material, has found this herpeto-fauna to consist almost exclu- sively of a single new species, Clevosaurus convallis sp. nov., with only one specimen referable to Sphenodontia incertae sedis. Clevosaurus is known from the Upper Triassic and Lower Jurassic in various parts of the world, but C. convallis represents the first occurrence of the genus in the Jurassic of Britain. The material is fragmentary but includes numerous premaxillae, maxillae, dentaries and palatines, and the new species is distinguished by the unique combination of six large additional dentary teeth and a very short nasal process of the premaxilla, along with the diagnostic Clevosaurus features.

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