Hydrorion

Hydrorion Temporal range: Lower Jurassic, Toarcian PreꞒ Ꞓ O S D C P T J K Pg N
Skeleton
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Superorder:	†Sauropterygia
Order:	†Plesiosauria
Family:	†Microcleididae
Genus:	†Hydrorion Großmann, 2007
Type species
†Hydrorion brachypterygius (von Huene, 1923)
Synonyms
Microcleidus brachypterygius von Huene, 1923 Plesiosaurus brachypterygius (von Huene, 1923)

Restoration

Hydrorion (meaning 'water hunter') is a genus of plesiosaur from the Toarcian Age of the Lower Jurassic. It is only known from multiple specimens, all discovered in the Posidonia Shale of south-western Germany. The only species of Hydrorion is H. brachypterygius, which was originally described as a species of Plesiosaurus and then Microcleidus.^[1][2] It was a relatively small plesiosaur, with the largest specimen measuring 4 m (13 ft) long.^[3]

See also

• Timeline of plesiosaur research

References

1. F. v. Huene. (1923). Ein neuer Plesiosaurier aus dem oberen Lias Württembergs. Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg 79:3-23
2. Großmann, F (2007). "The taxonomic and phylogenetic position of the pleisiosauroidea from the Lower Jurassic Posidonia shale of south-west Germany". Palaeontology. 50 (3): 545–564. doi:10.1111/j.1475-4983.2007.00654.x. S2CID 130961209.
3. Peggy Vincent (2011). "A re-examination of Hauffiosaurus zanoni, a pliosauriod from the Toarcian (Early Jurassic) of Germany". Journal of Vertebrate Paleontology. 31 (2): 340–351. doi:10.1080/02724634.2011.550352. S2CID 84743241.