Reptilia - Sauropterygia - Polycotylidae

PaleoDB taxon number: 100117

Alternative combination: Trinacromerum osborni

Synonym: Polycotylus osborni Watson 1951 (taxon 172355)

Full reference: S. W. Williston. 1902. Restoration of Dolichorhynchops osborni, a new Cretaceous plesiosaur. Kansas University Science Bulletin 1(9):241-244

Belongs to Dolichorhynchops according to F. R. O'Keefe 2004

Sister taxa: Dolichorhynchops bonneri, Dolichorhynchops herschelensis, Dolichorhynchops tropicensis, Plesiosaurus ichthyospondylus, Trinacromerum latimanus

Type specimens:

• Dolichorhynchops osborni: KUVP 1300, a skeleton (nearly complete skeleton). Its type locality is east of Wallace (PROXY), which is in a Campanian marine chalk in the Niobrara Formation of Kansas.
• Polycotylus osborni:

Ecology: aquatic carnivore