Species: bairdi ESTES, 1965
Etymology: In honor of Donald Baird of Princeton University, who first started to systematical collect microvertebrates from the Bug Creek area.

Holotype: AMNH 8123

Locality: Bug Creek Anthills, Bug Creek, near Fort Peck Resevoir, McCone County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material: Nearly complete trunk vertebrae.

Referred material:

BRAYNT, 1990

Locality: Northeastern Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

UCMP 123480: Dentary.

UCMP 123477: Vertebrae.

 

BREITHAUPT, 1982

Locality: East flank of Rock Springs Uplift, Sweetwater County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

UW 15040: ?left dentary fragment.

UW 15041: Maxillary fragment.

UW 15042: ?Vomer fragment.

UW 14269: Atlantes.

 

CARPENTER, 1979

Locality: UCM loc. 77062, Weld County, Colorado.

Horizon: Laramie Formation.

Biostratigraphy:

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

Material:

UCM 38767: Atlas.

 

DEMAR & BREITHAUPT, 2006

Locality: UW V-81006, False Rocks Quarry (part of BQFR, Barwin Quarry False Rocks), southeastern Wind River Basin, Wyoming.

Horizon: Mesaverde Formation.

Biostratigraphy:

Age: Judithian Age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

UW 34846: Atlas.

 

ESTES, BERBERIAN & MESZOELY, 1969

Locality: Bug Creek Anthills (BCA), 80 feet below the Tullock Formation in the west half of Section 9, T22N, R43E, McCone County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

MCZ 3674, 3677-3679: Vertebrae, atlantes, dentaries, maxillae, parietals, postdentary "compound" bone and exoccipitals.

 

HOGANSON, ERICKSON & HOLLAND, 2007

Locality: NDSFC Locality LO64, Logan County, North Dakota.

Horizon: Fox Hills Formation.
Note: Interfingering of Western Interior Seaway with the Hell Creek Formation.

Biostratigraphy:

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

Material:

ND 99-5.1: Dorsal vertebra.

 

SAHNI, 1972

Locality: Montana.

Horizon: Judith River Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

Number: Not given: A number of Atlas, Dorsal vertebrae and a fragmentary exoccipital.

 

STENERSON & O’CONNER, 1994

Locality: Northwestern South Dakota.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

Number: Not given:

cf. Lisserpeton bairdi EBERTH, 1987

Locality: Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Judith River Formation, Judith River Group.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Late Cretaceous.

Material:

Number: Not given: