WELSH & SANKEY, 2008

Locality: "Purple Hill" Microsites, Rattlesnake Mountain, Big Bend National Park, Brewster County, Texas.

Horizon: Aguja Formation.

Biostratigraphy:

Age: Edmontonian age, Upper Campanian Stage- Lower Maastrichtian Stage, Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

LSUMNS V-17891: Eggshell.