Locality: From the main fossiliferous layer of the Inversand Company marl pit, Sewell, Gloucester County, New Jersey.

Horizon: Hornerstown Formation, Rancocas Group.

Biostratigraphy:

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

Material:

NJSM 11302: Abraded distal end of left humerus and associated proximal portion of humeral shaft, proximal end of radius, and fragment of shaft of ulna.

Note: There is some debate on whether this formation is Maastrichtian, Late Cretaceous or Danian, Early Paleocene.