Species: lockwoodii (COPE, 1869) COPE, 1870 (nomen vanum)
Etymology:
= Plesiosaurus lockwoodii COPE, 1869 (nomen vanum)

Holotype: AMNH

Locality: Near Mantteawan, Monmouth County, New Jersey.

Horizon: Raritan Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material: Dorsal vertebra.
Note: Lost.