†subfamily Polycotylinae Albright et al. 2007 (plesiosaur)

Reptilia - Sauropterygia - Polycotylidae

Full reference: L. B. Albright, D. D. Gillette, and A. L. Titus. 2007. Plesiosaurs from the Upper Cretaceous (Cenomanian-Turonian) Tropic Shale of southern Utah, part 2: Polycotylidae. Journal of Vertebrate Paleontology 27(1):41-58

Parent taxon: Polycotylidae according to L. B. Albright et al. 2007

Sister taxa: Ceraunosaurus, Cimoliasaurus leucoscopelus, Dolichorhynchops, Edgarosaurus, Eopolycotylus, Georgiasaurus, Manemergus, Pahasapasaurus, Palmulainae, Palmulasaurinae, Piratosaurus, Plesiopleurodon, Polycotyilnae, Sulcusuchus, Thililua, Trinacromerum, Polycotylus ichthyospondylus tanais, Polycotylus brevispondylus

Subtaxa: Polycotylus

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Ecology: aquatic carnivore

Distribution:

• Cretaceous of United States (8: Alabama, Kansas, South Dakota, Wyoming collections)

• Jurassic of France (1)

Total: 9 collections each including a single occurrence

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