Species: tectum COPE, 1876
Etymology: Latin, tectum, "roof."

Holotype: AMNH 5682

Locality: Judith River, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material: An anterior trunk vertebra.

Referred material:

AUFFENGERB & GOIN, 1959

Locality: Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

CM 6467: A dorsal vertebra.

 

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 129452: Vertebrae.

 

BREITHUPT, 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 14307: left dentary fragment.

UW 14308: left dentary fragment.

UW 15021: left dentary fragment.

UW 14310: left dentary fragment.

UW 14571: Atlas.

 

BREITHAUPT, 1985

Locality: Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

Number: Not given:

 

BRINKMAN, 1990

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

Horizon: Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.

Material:

Number: Not given:

 

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 38716: Vertebra.

UCM 38717: Vertebra.

UCM 38723: Neural arch.

UCM 38724: Neural arch.

UCM 38720: Dentary.

UCM 38721: Dentary.

UCM 38722: Dentary.

 

EBERTH, BRAMAN, & TOKARK, 1990

Locality: Muddy Lake, Kindersley County, west-central Saskatchewan Province, Canada.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

Number: Not given:

 

ESTES, 1964

Locality: V-5003, S 1/2, Sec. 20, T37N, R64W, Lance Creek, Powder River Basin, Niobara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: Isolated dentaries, maxillae, and vertebrae.

 

Localities: UCMP V-5616, Altman Blowout, this large blowout, site of the UCMP field-party camps form 1956 to 1960, is just east of the crest of the divide separating Lance Creek and Hancock Creek and 100 yards east of a dirt road. Fossils were found in anthills, talus, and sandstone exposed in the blowout, which is in the NE 1/4, Sec. 9, T37N, R64W, Niobrara County (Formerly Converse County), Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: A few vertebrae.

 

Locality: UC V-5617, Eastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: Atlas.

 

Locality: UC V-5619, Eastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: Atlases, jaw fragments, vertebrae.

 

Locality: UCMP V-5620, Lull Quarry, near the head of a tributary of Buck Creek, Powder River Basin, Niobrara County (Formerly Converse County), Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

UC 49541-49543: Dorsal vertebrae.

UC 49516-49517: Atlases.

UC 49548: left dentary.

UC 49507-49508: Maxillae.

Also more than 500 vertebrae, and many dentaries, maxillae, premaxillae, and limb elements.

 

Locality: UC V-5622, Eastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: Exoccipital, jaw fragments and a few vertebrae.

 

Locality: V-5623, Curiosity Point, anthills and talus found along the southern side of a twin-leaked erosional remnant of cross-stratified sandstone approximately 200 years north of a dirt road,
Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: Vertebra.

 

Locality: UC V-5709, Eastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: Dentary.

 

Locality: UCMP V-5711, Bushy Tailed Blowout, Quarry area includes the floor of a small blowout approximately 10 yards northwest of the highest point on the ridge forming the northeastern side of the blowouts of loc. V-5003, S 1/2, Sec. 20, T37N, R64W, Lance Creek, Powder River Basin, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: Many vertebrae, atlases, dentaries, maxillae, parietals, exocciptials, and more than 500 hundred vertebrae.

 

Locality: UC V-5713, Eastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: A few vertebrae and jaw fragments.

 

Locality: UC V-5717, Eastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: A few vertebrae and Atlases.

 

Locality: UCMP V-5815, Hatcher Number 2, western side of a cross-stratified sandstone erosional remnant near the center of a large blowout on the crest of a ridge, the distance form the nearest point on the road, approximately 150 yards south of the quarry, to the Johnson ranch is 0.4 miles, Niobrara County (Formerly Converse County), Eastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: A few vertebrae, Atlases, and exocciptials.

 

Locality: UCMP V-5817, False Disciple Point, cross-stratified sandstone and sandy shales cropping out on the top of the northern end of a long, northwestward-trending ridge that extends from the crest of the divide between the Hancock and Lance Creek drainages, Niobrara County (Formerly Converse County), Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: A few Atlases, vertebrae, premaxillae, and dentaires.

 

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 3673: Vertebrae, Atlantes, dentaries, maxillae, parietals, postdentary "compound" bones, and exoccipitals.

 

LAMBE, 1902

Locality: Red Deer River, Alberta Province, Canada.

Horizon: Judith River Formation, Judith River Group.

Biostratigraphy:

Age: Judithian age, Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: A number of trunk vertebrae.

 

LANGSTON, STANDHARDT, & STEVENS, 1989

Locality: Big Bend, Brewster County, Texas.

Horizon: Lower Tornillo.

Biostratigraphy:

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

Material:

Number: Not given:

 

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:

 

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:

 

WHITMORE, 1988

Locality: SDSM Locality V851, Zerbst Locality, east of the Cheyenne River, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

SDSM 12379: 10 atlantes.

SDSM 12383: 47 vertebrae.

 

Locality: SDSM Locality V852, Hanson Locality, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

SDSM 12378: 1 atlas.

SDSM 12382: 2 vertebrae.

 

Locality: SDSM Locality V685, Greasewood Creek Locality, northern side of the south fork of the Greasewood Creek, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

SDSM 12744: 1 vertebra.

 

Locality: SDSM Locality V853, Leonard’s Lizard Site, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

SDSM 15142: 2 vertebrae.

 

WROBLEWSKI,1998

Locality: Western Hanna Basin, Carbon County, Southcental Wyoming.

Horizon: Ferris Formation.

Biostratigraphy:

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

Material:

Number: Not given:

 

= Hedronchus sternbergi COPE, 1876
Etymology:

Holotype:

Locality: :

Horizon:

Biostratigraphy:

Age:

Material:

 

= Hemitrypus jordanianus COPE, 1876
Etymology:

Holotype: AMNH 5686

Locality: Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material: A single vertebra.

Referred material:

AUFFENBERG & GOIN, 1959

Locality:

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

USNM 22252: A mid dorsal vertebra.

USNM 22253: Anterior vertebra.

 

= Scapherpeton excisum COPE, 1876
Etymology: Latin, excidere, excisum; ex, “out” and Latin, caedere, “to cut.”

Holotype: AMNH 5684

Locality: Judith River, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material: 2 dorsal vertebrae and 1 caudal..

 

= Scapherpeton favosum COPE, 1876
Etymology:

Holotype: AMNH 5685

Locality: Judith River, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material: A single vertebra.

 

= Scapherpeton laticolle COPE, 1876
Etymology:

Holotype: AMNH 5683

Locality: Judith River, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material: 7 dorsal vertebrae form different individuals.

Referred material:

AMNH 5791: Atlas.

AMNH 5792: two partial limb bones.