Hydrorion Explained

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 southwestern 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 long.^[3]

See also

• Timeline of plesiosaur research

Notes and 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. 10.1111/j.1475-4983.2007.00654.x. 130961209. free.
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 . 10.1080/02724634.2011.550352 . 84743241 .