Species: gemma ZANGERL, 1953
Etymology:

Holotype: FMNH PR129

Locality: SW 1/4, NE 1/4, SW 1/4, sec. 33, T 16N, R 16E, Burkville Locality, southwest of Montgomery, Montgomery 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: 3 adjoining neural elements, probably the second to the fourth, the left and right third to seventh and the tenth and eleventh peripherals, the pygal and suprapygal in sutural union with the last peripherals on both sides, fragments of costals, essentially complete right hypoplastron and the posterior half of the corresponding xiphiplastron, and nearly complete coracoid.

Referred material:

Locality: West Greene 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:

FMNH PR152: Left third and fourth peripherals, fragments of costal plates.

 

HOOK, 1998

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:

RMM 3216, 3164: Fragmentary skull and nearly complete skeleton.

 

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

FMNH PR 122: