Genus: Callawayasaurus CARPENTER, 1999
Etymology: In honor of Jack Callaway, who in his briefe career as a vertebrate paleontologis, did much to improve our understanding of marine reptiles and Greek, sauros, "lizard."

Species: columbiensis (WELLES, 1962) CARPENTER, 1999
Etymology: In reference to the country of Colombia, where the specimen was discovered.
= Alzadasaurus columbiensis WELLES, 1962

Holotype: UCMP 38349

Locality: Loma de la Catalina, 6 km west of Leiva, About 300 meters north of road from Leiva to Chiquinquira, Boyaca Province, Colombia.

Horizon: Paja Formation.

Biostratigraphy:

Age: Upper Aptian Stage, Middle Gallic Subepoch, Uppermost Early Cretaceous Epoch, Early Cretaceous.

Material: Skull and fine skeleton lacking only distal parts of paddles, ischia, ilia and tail.

Note: Pathological cervicl vertebrae, and a series of pathological vertebral series (Sassoon, 2019).

Referred material:

Geological Survey Museum at Bogota, Columbia: A nearly complete skeleton.


GONI & GASPARINI, 1983, GASPARINI & GONI,1985

Locality: Loma La Cabrera, 4 km NO V. Leiva, Boyaca Province, Colombia.

Horizon:

Biostratigraphy:

Age: Early Aptian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material:

ICNHMNR-081: Anterior part of skull and a fragment of mandible.

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Species: nova PARAMO-FONSECA, PADILLA, O'GORMAN, GASPARINI, & PARRA RUGE, 2016
Etymology:

Holotype: FCG CBP-3

Locality: Approximately 120 mts west of Quebrada Barranco Hondo, Boyaca Department, Colombia.

Horizon: Paja Formation.

Biostratigraphy:

Age: Aptian Stage, Middle Gallic Subepoch, Uppermost Early Cretaceous Epoch, Early Cretaceous.

Material: Skull and skeleton.