A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UK
We describe the anatomy of a new longirostrine pliosaurid, Eardasaurus powelli gen. et sp. nov., based on a substantially complete skeleton from the Middle Jurassic Oxford Clay Formation of Oxfordshire, UK. The specimen brings the number of pliosaurid genera known from the Oxford Clay Formation up...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Institute of Paleobiology PAS
2022-06-01
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| Series: | Acta Palaeontologica Polonica |
| Subjects: |
| _version_ | 1811227168432193536 |
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| author | HILARY F. KETCHUM ROGER B.J. BENSON |
| author_facet | HILARY F. KETCHUM ROGER B.J. BENSON |
| author_sort | HILARY F. KETCHUM |
| collection | DOAJ |
| description | We describe the anatomy of a new longirostrine pliosaurid, Eardasaurus powelli gen. et sp. nov., based on a substantially
complete skeleton from the Middle Jurassic Oxford Clay Formation of Oxfordshire, UK. The specimen brings
the number of pliosaurid genera known from the Oxford Clay Formation up to a minimum of six, contributing to our
understanding of the most taxonomically rich pliosaurid assemblage. The teeth of Eardasaurus powelli gen. et sp. nov.
have “carina-like” apicobasal enamel ridges, previously only identified in Liopleurodon ferox among Middle Jurassic
pliosaurids, and which may be more widespread among early pliosaurids than has been recognised. Our phylogenetic
analysis shows that Eardasaurus powelli gen. et sp. nov. is nested within Middle Jurassic thalassophonean pliosaurids,
slightly more derived than Peloneustes philarchus, as sister to a group comprising “Pliosaurus” andrewsi, Simolestes
vorax, Liopleurodon ferox, Pliosaurus spp. and brachauchenines. |
| first_indexed | 2024-04-12T09:36:53Z |
| format | Article |
| id | doaj.art-8615f9b0863f43e9950e9171c6829f1f |
| institution | Directory Open Access Journal |
| issn | 0567-7920 1732-2421 |
| language | English |
| last_indexed | 2024-04-12T09:36:53Z |
| publishDate | 2022-06-01 |
| publisher | Institute of Paleobiology PAS |
| record_format | Article |
| series | Acta Palaeontologica Polonica |
| spelling | doaj.art-8615f9b0863f43e9950e9171c6829f1f2022-12-22T03:38:12ZengInstitute of Paleobiology PASActa Palaeontologica Polonica0567-79201732-24212022-06-0167229731510.4202/app.00887.2021A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UKHILARY F. KETCHUM0ROGER B.J. BENSON1Oxford University Museum of Natural History, Parks Road, Oxford, OX1 3PW, UK.Department of Earth Sciences, University of Oxford, 3 South Parks Road, Oxford, OX1 3AN, UKWe describe the anatomy of a new longirostrine pliosaurid, Eardasaurus powelli gen. et sp. nov., based on a substantially complete skeleton from the Middle Jurassic Oxford Clay Formation of Oxfordshire, UK. The specimen brings the number of pliosaurid genera known from the Oxford Clay Formation up to a minimum of six, contributing to our understanding of the most taxonomically rich pliosaurid assemblage. The teeth of Eardasaurus powelli gen. et sp. nov. have “carina-like” apicobasal enamel ridges, previously only identified in Liopleurodon ferox among Middle Jurassic pliosaurids, and which may be more widespread among early pliosaurids than has been recognised. Our phylogenetic analysis shows that Eardasaurus powelli gen. et sp. nov. is nested within Middle Jurassic thalassophonean pliosaurids, slightly more derived than Peloneustes philarchus, as sister to a group comprising “Pliosaurus” andrewsi, Simolestes vorax, Liopleurodon ferox, Pliosaurus spp. and brachauchenines.plesiosauriapliosauridaeoxford clay formationjurassiccallovianengland |
| spellingShingle | HILARY F. KETCHUM ROGER B.J. BENSON A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UK Acta Palaeontologica Polonica plesiosauria pliosauridae oxford clay formation jurassic callovian england |
| title | A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UK |
| title_full | A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UK |
| title_fullStr | A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UK |
| title_full_unstemmed | A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UK |
| title_short | A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UK |
| title_sort | new pliosaurid from the oxford clay formation of oxfordshire uk |
| topic | plesiosauria pliosauridae oxford clay formation jurassic callovian england |
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