Species: lapisossea ZANGERL, 1953
Etymology:

Holotype: FMNH P27453

Locality: Harrell Station area, 1 mile east of Harrell Station, South of railroad tracks, Dallas County, Alabama.

Horizon: Mooreville Chalk, Selma Formation.

Biostratigraphy: Middle Tylosaurus Acme-zone – Clidastes Acame zone.

Age: Niobraran age, Upper Santonian-Lower Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material: Well-persevered, nearly complete carapace, partial plasteron and some vertebrae and girdle bones.

Referred material:

Locality: Harrell Station Area, Dallas County, Alabama.

Horizon: Mooreville Chalk, Selma Formation.

Biostratigraphy: Middle Tylosaurus Acme-zone – Clidastes Acame zone.

Age: Niobraran age, Upper Santonian-Lower Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

FMNH PR27332: A few periopheral bones and distal half of humerus.

FMNH PR263: Fragmentary carapace.

FMNH PR201: Both xihiplastra.