Species: cephalica (HAY, 1904) HAY, 1908
Etymology:
= Baena cephalica HAY, 1904

Holotype: YPM 1785 (now lost)

Locality: Niobrara County (Old Converse County), Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Skull.

Referred material:

BREITHAUPT, 1982

Locality: UW Locality V-79032, east flank of Rock Springs Uplift, Sweetwater County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

UCMP Uncatalogued: Skull fragment.

 

BYRANT, 1990

Locality: Eastern Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

UCMP 129729: Dentary.

 

CASE, 1939

Locality: Near Fort Peck, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

UCMP 20490: Skull, mandible, nearly complete skeleton and shell.

 

ESTES, BERBERIAN & MESZOELY, 1969

Locality: Bug Creek Anthills, McCone County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

MCZ 3510-3512, 3519, 3530: A nearly complete skull, missing the right maxillary area, along with isolated cranial and mandibular elements.

 

GAFFNEY, 1972

Locality: Bug Creek Anthills, SW 1/4, sect. 9, T22N, R43E, McCone County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

MCZ 3530: Both pariteals.

AMNH 4948: AN almost complete shell.

MCZ 3510, 3511, 3512, 3519: Maxillae.

MCZ 3525: Right paretal.

/1979

Locality: 26 miles south of Lismas, Dawson County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

AMNH 2604: Lower Jaw.

AMNH 2605, 2606: Dentaries.

 

ROLLOT, LYSON & JOYCE, 2018

Locality: 'Big Turtle Cove Locality (DMNH locality 6303), northwest of the town of Marmarth, Slope County, North Dakota.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

DMNH 96004: Near complete skull.