Reptilia - Plesiosauria - Polycotylidae
Full reference: R. O. Clark, F. R. O'Keefe, and S. E. Slack. 2024. A new genus of small polycotylid plesiosaur from the Upper Cretaceous of the Western Interior Seaway and a clarification of the genus Dolichorhynchops. Cretaceous Research 157:105812:1-35
Parent taxon: Polycotylinae according to R. O. Clark et al. 2024
Sister taxa: Eopolycotylus, Georgiasaurus, Polycotylus, Scalamagnus, Serpentisuchops, Trinacromerum
Subtaxa: Dolichorhynchops Martinectes Unktaheela
Ecology: aquatic carnivore
Distribution:
• Cretaceous of Canada (3: Manitoba, Northwest Territories, Saskatchewan collections), Poland (2), the Russian Federation (1), United States (13: Kansas, South Dakota, Texas, Wyoming)
Total: 19 collections each including a single occurrence