Reptilia - Plesiosauria - Polycotylidae
Alternative combinations: Dolichorhynchops bonneri, Trinacromerum bonneri
Full reference: D. A. Adams. 1997. Trinacromerum bonneri, new species, last and fastest pliosaur of the Western Interior Seaway. Texas Journal of Science 49(3):179-198
Belongs to Martinectes according to R. O. Clark et al. 2024
See also Adams 1997 and O'Keefe 2008
Sister taxa: none
Type specimen: KUMNH 40002, a partial skeleton. Its type locality is Johnson Ranch, Redbird, which is in a Campanian/Campanian marine horizon in the Pierre Shale Formation of Wyoming.
Distribution:
• Cretaceous of United States (3: South Dakota, Texas, Wyoming collections)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.