Species: cooki LEIDY, 1865
Etymology:

Holotype: AMNH 2521 (Formerly Rutgers University 1. KV-6)

Locality: Tinton Falls, Green-sand near Barnsboro, Gloucester County, New Jersey.

Horizon: Lower most Hornerstown Formation, Rancocas Group, or Navesink Formation, Monmouth Group.

Biostratigraphy:

Age: Maastrichtian Stage, Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Fragmentary skull and mandible.

Referred material:

ROBB, 2004

Locality: Maple Shade, Burlington County, New Jersey.

Horizon: Merchantville Formation, Matawan Group.

Biostratigraphy:

Age: Coniacian Stage, Lowermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

ANSP 15302: Nearly complete carapace, complete plastron, and fragments of post-craniale skeleton.
Note: Labeled as "Bothremys barberi Schmidt".