Species: osborni WILLISTON, 1902
Etymology: In honor of Henry Fairfield Osborn.
= Polycotylus osborni (WILLISTON, 1902) WATSON, 1951?
= Trinacromerum osborni (WILLISTON, 1902) KUHN, 1934

Holotype: KUVP 1300

Locality: Unknown, east of Wallace, Logan County, Kansas.

Horizon: Smoky Hill Member, Niobrara Formation.

Biostratigraphy: Hesperornis zone.

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

Material: Skull and incomplete skeleton.
Note: Gastroliths were found.

Reconstruction of the skull based on FHSM VP 404, KUVP 1300 and MCZ 1064 (modifed from O'Keefe, 2004). A) Dorsal, B) Lateral with jaws closed; C) Lateral with jaws open and D) ventral view.

Referred material:

BONNER, 1964

Locality: Russell Springs, Logan County, Kansas.

Horizon: Smoky Hill Member, Niobrara Formation.

Biostratigraphy:

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

Material:

FHKSCHM 7960: Skull and skeleton.

 

CARPENTER, 1996

Locality: Near Russell Springs, Logan County, Kansas.

Horizon: Smoky Hill Member, Niobrara Formation.

Biostratigraphy: Hesperornis zone.

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

Material:

FHSM VP404: A nearly complete skeleton.

 

Locality: Logan County, Kansas.

Horizon: Smoky Hill Member, Niobrara Formation.

Biostratigraphy:

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

Material:

MCZ 1064: Partial skeleton and skull of a young individual.

 

Locality: Red Bird, Niobrara County, Wyoming.

Horizon: Sharon Springs Member, Pierre Shale.

Biostratigraphy:

Age: Upper Lower to Lower Middle Campanian Stage, Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous

Material:

AMNH 5834: Complete skull of a juvenile.

 

Locality: Hat Creek drainage, Fall River County, South Dakota.

Horizon: Sharon Springs Member, Pierre Shale.

Biostratigraphy:

Age: Upper Lower to Lower Middle Campanian Stage, Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous

Material:

USNM 50133: Skull.

KUVP 40001: Skull.

 

CICIMURRI & EVERHART, 2001/NICHOLLS, 1988

Locality: Manitoba Province, Canada.

Horizon: Pembina Member, Pierre Shale.

Biostratigraphy:

Age: Campanian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

RTMP P80.06.12: Fragmentary specimen.
Note: The teleost Apateodus found in the stomach region.

 

RUSSELL, 1967

Locality: Locality no P6502G, lower Anderson River area, District of Mackenzie, Northwest Territory, Canadian Arctic.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

NMC 10436: Pectoral elements and a portion of the presacral vertebral column.

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Species: herschelensis SATO, 2005
Etymology: In reference to where the specimen was found, Herschel, Saskatchewan Province, Canada.
= Novae? SATO & TOKARYK, 1999

Holotype: RSM P2310.1

Locality: Herschel, west of Saskatoon, Saskatchewan Province, Canada.

Horizon: Bearpaw Formation.

Biostratigraphy:

Age: Upper Campanian-Lower Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Skull, mandible, vertebre, ribs, pectoral and pelvic girdles, and distal phalanges.

Referred material:

RSM P2310.2, 3: Badly damaged propodial bones.

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