Holotype: FMNH PR171
Locality: West Green Locality, Greene 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: 2 costal plates, 3 neurals, and a fragment of a hypoplastron.
Referred material:
Locality: Moore Brothers farm, Harrell locality, 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 P27485: Left fifth peripheral.
Locality: Central part of large Harrell locality, 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 P27397: A number of very poorly preserved fragments, including a peripheral.