Species: ampals MARSH, 1889
Etymology:

Holotype: YPM 11769

Locality: Lance Creek, Northeastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: Teeth and fragmentary skeleton.

Referred material:

McKENNA, 1961

AMNH 55990: Scapula.

AMNH 55991: Fragmentary scapula.

AMNH 55992: Scapula.

 

MARSHALL, MUIZON & SIGE, 1983

Locality: Tiupampa, Bolivia.

Horizon: El Molino Formation.

Biostratigraphy:

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

Material:

Sp A

MNHN Vil 103: Partial right M4.

Sp B.

MNHN Vil 108: Partial edentulous left mandible with 2 partial alveoli, possibly representing those for P3, M1 and anterior root of M2.

 

NELSON & CROOKS, 1987

Locality: Rough Road Quarry, Emery county, Utah.

Horizon: Member? Cedar Mountain Formation.

Biostratigraphy:

Age: Age?, Stage?, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

Number: Not given: UM1.

 

SIGE, 1972

Locality: Laguna Umayo, Department Puno, Peru.

Horizon: Vilquechico Formation.

Biostratigraphy:

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

Material:

LU 4968-1: Fragmentary upper molar.

LU 4968-2: Fragment of dentary and m4.

LU 5968-4: Fragmentary lower molar.

 

SIGNEAU-RUSSELL & RUSSELL, 1986

Locality: Taveiro, Province of do Beira Litoral, Western Portugal.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

TV1: Fragment of upper molar.

TV2: Lingual half of an upper molar.

TV3: Upper permolar.

TV4: Lower P4.

TV5: Premolar.

 

WINKLER, JACOBS, LEE & MURRY, 1995
Locality: Dallas-Fort Worth International Airport, Texas.

Horizon: Woodbine Formation.

Biostratigraphy:

Age: Cenomanian Stage, Uppermiddle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

SMU 74642: Lower cheek tooth.