Hydrorion

Extinct genus of reptiles

Hydrorion
Temporal range: Lower Jurassic, Toarcian
PreꞒ
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S
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Skeleton
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Sauropsida
Superorder:
Sauropterygia
Order:
Plesiosauria
Family:
Microcleididae[1]
Genus:
Hydrorion

Großmann, 2007
Type species
Hydrorion brachypterygius
Synonyms
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 southwestern Germany. The only species of Hydrorion is H. brachypterygius, which was originally described as a species of Plesiosaurus and then Microcleidus.[2][3] It was a relatively small plesiosaur, with the largest specimen measuring 4 m (13 ft) long.[4]

See also

References

  1. ^ Ketchum HF, Benson RBJ. Global interrelationships of Plesiosaur (Reptilia, Sauropterygia) and the pivotal role of taxon sampling in determining the outcome of phylogenetic analyses. Biological Reviews
  2. ^ F. v. Huene. (1923). Ein neuer Plesiosaurier aus dem oberen Lias Württembergs. Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg 79:3-23
  3. ^ 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.
  4. ^ 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.
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Sauropsida
    • see Sauropsida
Sauropterygia
    • see below↓
Helveticosauridae?
Saurosphargidae?
Placodontia
Cyamodontoidea
Eosauropterygia
    • see below↓
Helveticosaurus zollingeri Placochelys placodonta
Pachypleurosauria
Nothosauroidea
Simosauridae
Nothosauridae
Pistosauroidea
Plesiosauria
    • see below↓
Keichousaurus hui

Nothosaurus mirabilis

Pistosaurus longaevus
Rhomaleosauridae
Pliosauridae
Thalassophonea
Brachaucheninae
Plesiosauroidea
Microcleididae
Cryptoclidia
    • see below↓
Macroplata tenuiceps

Attenborosaurus conybeari

Hydrorion brachypterygius
Cryptoclididae
Colymbosaurinae
Cryptoclidinae
Muraenosaurinae
Leptocleidia
Leptocleididae
Polycotylidae
Palmulasaurinae
Occultonectia
Polycotylinae
Dolichorhynchia
Euelasmosaurida
Elasmosaurinae
Weddellonectia
Aristonectinae
Cryptoclidus eurymerus

Leptocleidus capensis

Elasmosaurus platyurus
Taxon identifiers
Hydrorion brachypterygius


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