Liopleurodon

Liopleurodon (/ˌlˈplʊərədɒn/; meaning 'smooth-sided teeth') is an extinct genus of large, carnivorous marine reptile belonging to the Thalassophonea, a clade of short-necked pliosaurid plesiosaurs. Liopleurodon lived from the Callovian Stage of the Middle Jurassic to the Kimmeridgian stage of the Late Jurassic Period (c. 166 to 155 mya). It was the apex predator of the Middle to Late Jurassic seas that covered Europe. The largest species, L. ferox, is estimated to have grown over 6 metres (20 ft) in length based on a large skull.

Liopleurodon
L. ferox skeleton, Museum of Paleontology, Tübingen
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: Sauropterygia
Order: Plesiosauria
Family: Pliosauridae
Clade: Thalassophonea
Genus: Liopleurodon
Sauvage, 1873
Species
  • L. ferox Sauvage, 1873 (type)
  • ?L. pachydeirus (Seeley, 1869)
Synonyms
  • Pliosaurus ferox (Sauvage, 1873) Lydekker, 1888
  • Pliosaurus pachydeirus Seeley, 1869
  •  ?Pliosaurus giganteus Conybeare, 1824
  •  ?Ischyrodon meriani von Meyer, 1838

The name "Liopleurodon" (meaning "smooth-sided tooth") derives from Ancient Greek words: λεῖος leios, "smooth"; πλευρά pleurá, "side" or "rib"; and ὀδόν odṓn, "tooth".

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