Also known as Cowbridge islands, SS 975 796
Where: Wales, United Kingdom (51.5° N, 3.5° W: paleocoordinates 35.8° N, 0.2° E)
• coordinate stated in text
• small collection-level geographic resolution
When: Rhaetian (208.5 - 201.3 Ma)
• Edwards & Evans (2006) argued for a late Carnian age based on biostratigraphy (similarity of procolophonids to those from Wolfville Fm of North America), whereas Whiteside & Marshall (2008) argued for a Rhaetian age based on the presence of Planocephalosaurus.
• bed-level stratigraphic resolution
Environment/lithology: fissure fill; limestone and brown, red, calcareous sandstone
Size class: mesofossils
Collected by T. Thomas, W. Kühne
Collection methods: quarrying, chemical, acetic,
• <5% acetic acid solution used to remove matrix from the fossils (Fraser 1986). Aberdeen University Palaeontology collection (AUP)
Primary reference: P. L. Robinson. 1957. The Mesozoic fissures of the Bristol Channel area and their vertebrate faunas. Zoological Journal of the Linnean Society 43:260-228 [R. Whatley/R. Whatley/R. Butler]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 46077: authorized by Robin Whatley, entered by Robin Whatley on 30.12.2004, edited by Matthew Carrano, Evangelos Vlachos and Richard Butler
Creative Commons license: CC BY (attribution)
Taxonomic list
| Reptilia | |
Smilodonterpeton ruthinensis n. gen. n. sp.3, Haligonia sp.1, Haligonia cf. bolodon3, Leptopleuroninae indet.1, cf. Scoloparia sp.3, cf. Hypsognathus sp.3
Smilodonterpeton ruthinensis n. gen. n. sp.3 Skinner et al. 2020 parareptile Holotype. Two fragments of a partial right dentary (NHMUK PV R37469, Fig. 5C–E). Referred specimens. One partial right maxilla (from NHMUK PV R37474; Fig. 5A, B); one anterior fragment of dentary (NHMUK PV R37472, Fig. 5F, G); one fragment of a right dentary (NHMUK PV R37470, Fig. 5H–J); three fragments of a right dentary (NHMUK PV R37471, Fig. 5K–M); one right dentary fragment with emplacements for five teeth (NHMUK PV R37473, Fig. 5N–P); one additional jaw fragment without teeth (from NHMUK PV R37474); four dentary fragments, one hypothesized left and two right and one uncertain, from NMW 88.12 G.94. The proposed species is known from eleven specimens comprised of 13 dentary fragments (Fig. 5C–S) and one maxilla fragment (Fig. 5A, B).
Haligonia cf. bolodon3 Sues and Baird 1998 parareptile The primary specimen is an incomplete right maxilla (Fig. 4D, E), accompanied by a tooth from a separate individual (Fig. 4A–C). The maxilla is 5.2 mm long and the tooth approximately 1.5 mm wide.
cf. Scoloparia sp.3 Sues and Baird 1998 parareptile This taxon is recognised from multiple, isolated premaxillae, up to 3.5 mm long.
cf. Hypsognathus sp.3 Gilmore 1928 parareptile or cf. Leptopleuron sp. Specimens include numerous isolated premaxillae, bicuspid teeth and dentary fragments. Specimens are all small with jaw fragments up to approximately 4 mm long, broadened teeth up to 2 mm wide and premaxillae up to 2 mm long
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Tricuspisaurus thomasi n. gen. n. sp.2
Tricuspisaurus thomasi n. gen. n. sp.2 Robinson 1957 archosauromorph NHMUK R.6106, R.6107; PLR 501, PLR 590
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cf. Diphydontosaurus sp.3 Whiteside 1986 lepidosaur We describe two dentary fragments and an isolated tooth bearing pleurodont dentition, with similar tooth implantation and replacement to Diphydontosaurus avonis.
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| Chondrichthyes | |
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Rhomphaiodon minor3 Agassiz 1837 elasmobranch upright, cone-shaped tooth crown bearing twelve well-defined, vertical ridges radiating from cusp apex to crown base
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Polyacrodus cloacinus3 Quenstedt 1858 elasmobranch lingual half of the base of a large cusp, which if complete would have been tall and elongate
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