Genus: Eonatator BARDET, PEREDA SUBERBIOLA, IAROCHENE, BOUYA & AMAGHZAZ, 2005
Etymology: Greek, Eos, "dawn" and Latin, natator, "swimmer"; Dawn swimmer.

Species: sternbergii (WIMAN, 1920) BARDET, PEREDA SUBERBIOLA, IAROCHENE, BOUYA & AMAGHZAZ, 2005
Etymology:
= Clidastes sternbergi WIMAN, 1920
= Halisaurus sternbergii (WIMAN, 1920) RUSSELL, 1970

Holotype: UPI R163

Locality: Beaver Creek, Bilby's Ranch, Logan County, Kansas.

Horizon: Smoky Hill Member, Niobrara Formation.

Biostratigraphy:

Age: Santonian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material: Skull and skeleton.

Skeleton reconstruction.

Skull modified from BRDET & PEREDA-SUBERBIOLA, 2001. A) Dorsal and B) Lateral view of dentary.

Referred material:

Locality: West Greene, Greene County, Alabama.

Horizon: Selma Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material:

PR 186: Frontal, pterygid and dentary fragments, 1 dorsal and 1 pygal vertebrae.

 

Locality: Harrell Station area, southeast of Marion Junction, Dallas County, Alabama.

Horizon: Selma Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material:

PR 195: Frontal, basioccipital, 2 cervical, 19 dorsal and 10 caudal vertebrae.

 

LINDGREN & SIVERSON, 2005

Locality: Asen, Kristianstad Basin, southern Sweden.

Horizon:

Biostratigraphy: Belemnellocamax mammillatus zone.

Age: Latest Early Campanian Stage, Gulf Epoch, Late Cretaceous.

Material:

RM PZ R1811-R1819: Teeth.

 

Locality: Ignaberga Quarry, Kristianstad Basin, southern Sweden.

Horizon:

Biostratigraphy: Belemnellocamax mammillatus zone.

Age: Latest Early Campanian Stage, Gulf Epoch, Late Cretaceous.

Material:

RM PZ R1773: Premaxillae.

RM PZ R1775: Dorsal vertebra.

 

Locality: Ivo Klack, Kristianstad Basin, southern Sweden.

Horizon:

Biostratigraphy: Belemnellocamax mammillatus zone.

Age: Latest Early Campanian Stage, Gulf Epoch, Late Cretaceous.

Material:

RM PZ R416: An intermediate caudal vertebra.

PMU 1257: Intermediate caudal vertebra.

 

Locality: West-central Alabama.

Horizon: Mooreville Chalk, Selma Group.

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

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

Material:

RMM 6890 (= AUMP 402): Anterior portion of a right dentary with teeth, intermediate caudal vertebra.

ODEND 4 (= AUMP 1486): Tip of premaxilla.

ODEND 11 (= AUMP 408): Premaxilla.

RMM 5899: Intermediate caudal vertebra.

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Species: coellensis PARAMO-FONSECA, 2014
Etymology: In reference to Coello, the municipal in Colombia where the specimen was found.

Holotype: RC090805 (IGM p881237)

Locality: Quebrada El Cajon, Vega de los Padros, Coello Municpality, Tolima, Colombia.

Horizon:

Biostratigraphy:

Age: Campanian Stage, Gulf Epoch, Late Cretaceous.

Material: Nearly complete skull and skeleton.

Eonatator coellensis PARAMO-FONSECA (2013). A) skull as found; B) dorsal view of reconstruction.