Species: gracilis MARSH, 1889
Etymology:

Holotype: YPM 11835

Locality: Mammal locality no. 1, Lance Creek Region, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: Right UM1.

Note: According to MERRILL, 1907

USNM 2140

Locality: Wyoming.

Horizon: Ceratops beds, Late Cretaceous.

Material: Upper molar.

Referred material:

ARCHIBALD, 1982

Locality: UCMP V73087, Flat Creek 5, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

Number: Not given: 2 UP4.

 

Locality: UCMP V72208, Lead Slug Hill 1, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

UCMP 110639: Right LM2.

 

Locality: UCMP V75178, Wild Horse Basin, Garfield county, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

UCMP 116957: Left UM2.

 

CLEMENS, 1963

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, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

Numbers: Not given: 46 isolated teeth.

 

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, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

Numbers: Not given: 43 isolated teeth.

 

Localities: V-5622, V-5623, V-5709, V-5711, V-5713, Mammal localities nos. 1, 2 and 5, Peterson's quarry, Wyoming.

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

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, Eastern Wyoming.7

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, Eastern Wyoming.

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, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Numbers: Not given: Isolated teeth.

FOX, 1989

Locality: Long Fall, MNBT Quarry, Saskatchewan Province, Canada.

Horizon: Frenchman Formation.

Biostratigraphy:

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

Material:

UALVP 22820: Incomplete LP4.

UALVP 22816: LP4.

 

LILLEGRAVEN, 1969

Localities: KUA-1, 22, Stettler County, Alberta Province, Canada.

Horizon: Scollard Formation, Uppermost Edmonton Group.

Biostratigraphy:

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

Material:

UA 2371, 3670, 3694, 3695: LP4.

UA 3597, 3683: UP3.

UA 2519: UP4.

SLOAN & RUSSELL, 1974

Locality: Scabby Butte, northwest of Lethbridge,Lethbridge County, Southwestern Alberta Province, Canada.

Horizon: St. Mary River Formation.

Biostratigraphy:

Age: Edmontonian age, Upper Campanian Stage- Lower Maastrichtian Stage, Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

NMC 17662: Posterior half of a right P4.

NMC 17663: Posterior half of a scarcely worn left P4.

NMC 17664; A very tiny fragment of a right M1.

 

STORER, 1991

Locality: Gryde Local Fauna, Southwestern Saskatchewan Province, Canada.

Horizon: Frenchman Formation.

Biostratigraphy:

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

Material:

P2004.331: LP2.

P1927.144: RP3.

P1927.287: RP4.

P1927.665, P1927.700, P2004.106: LM1.

P1927.321, P2004.332, P2004.33: RM1.

P1927.55: RM2.

P1927.696: Lp.

P1927.274: Lm1.

P1927.754, P2004.334: Rm1.

P1927.13, P1927.63, P2004.335: Lm2.

P1927.417: Rm2.

 

= Selancodon brevis MARSH, 1889
Etymology:

Holotype:

Locality: Wyoming.

Horizon: Laramie Formation.

Biostratigraphy:

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

Material: Upper molar and inscor.

 

= Cimolomys digona MARSH, 1889
Etymology:

Holotype: YPM 11779

Locality: Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: M1.

_____________________________________________________________________________________

Species: bellus MARSH, 1889
Etymology:

Holotype: YPM 11778

Locality: Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: M2.
_____________________________________________________________________________________

Species: trochuus LILLEGRAVEN, 1969
Etymology:

Holotype: UA 2353

Locality: KUA-1, SW 1/4, SE 1/4, Sec. 18, T34N, R21W, Stettler County, Alberta Province, Canada.

Horizon: Scollard Formation, Uppermost Edmonton Group.

Biostratigraphy:

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

Material: Fragmentary right mandible with LP4.

Referred material:

UA 3086: UM1.

UA 3594: UM1.

_____________________________________________________________________________________

Species: clarki SAHNI, 1972
Etymology:

Holotype: AMNH 77179

Locality: Clayball hill, Birch Creek, Chouteau County, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material: RLP4.

Referred material:

AMNH 77180: LP4.

AMNH 77266: Incisor.

AMNH 77217: UP4.

AMNH 77241: UM2.

 

Locality: Clambank Hollow, Chouteau County, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

AMNH 77217: UP4.

AMNH 77218: UP4.

About 12 UM1.

 

KOSTER, CURRIE, EBERTH, BRINKMAN, JOHNSTON & BRAMAN, 1987

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:

 

LILLEGRAVEN & MCKENNA, 1986

Locality: Case Site 2 (unnumbered AMNH locality; Gerard R. Case field numbers MV511-515), SE 1/4 of sec. 27, T48N, R91W, Bighorn Basin, Washakie County, Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

AMNH 109424: LM1.

AMNH 109464, 109479: UM1.

 

Locality: Case Site 3, (unnumbered AMNH locality; Gerard R. Case field numbers MV511-515), Eastern center of sec. 27, T48N, R91W, Bighorn Basin, Washakie County, Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

AMNH 109422, 109423: LM1.

 

Locality: Jerry Case Five (UW V-81023 = AMNH unnumbered locality, Case Site 5; Gerard R. Case field numbers MV 496, 499, 516-557), NE corner of NW 1/4 of NW 1/4 of sec 27 plus SE corner of SW 1/4 of SW 1/4 of sec 22, T48N, R91W, Bighorn Basin, Washakie County, Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

AMNH 109466, 109485: LM1.

AMNH 109444: LM2.

AMNH 109419, UW 17071: UP4.

AMNH 109438, UW 17072: LM1.

 

Locality: No locality name (unnumbered AMNH locality: no field number), "12 mi NE of Worland", Bighorn Basin, Washakie County, Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

AMNH 109457: LM2.

Locality: Meteors (UW V-81066), center of W 1/2 of NE 1/4 of SE 1/4 of N 1/4 of sec 27, T48N, R91W, Bighorn Basin, Washakie County, Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

UW 15532: LM2.

 

Locality: False Rocks (UW V-81006 = UCMP V-81101 and within general area of UCMP V-5833), below top of southwestern slop of hill 6450 (on Garfield Peak Quadrangle, 1959, 7.5 min topographic map) in NE 1/4 of SW 1/4 of SW 1/4 of SE 1/4 of SW 1/4 of sec 4, T33N, R87W, Wind River Basin, Natrona County, Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

UW 15535: LM1.

UCMP 125336: UM2.

 

 

Locality: Barwin Quarry (unnamed AMNH locality; no field numbers), 37 m northwest of False Rocks (UW V-81006) locality, Wind River Basin, Natrona County, Wyoming.

Horizon: "Mesaverde" Formation.

Biostratigraphy:

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

Material:

AMNH 86363: LM1.

AMNH 108679: UP4.

AMNH 59695, 59698, 59699, 80002, 86306, 88485: UM1's.

AMNH 86307, 88482, 108678: UM2.

 

MONTELLANO, 1992

Locality: UCMP V-78098, Garbani 1, Havre Badlands, Hill County, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

UCMP 122155: M1.

UCMP 122186: M2.

UCMP 122191: m2.

 

= Cimolomys cf. C. clarki MONTELLANO, 1992

Locality: UCMP V-77083, Makela’s French 1, Mammal 1, Kennedy Coulee, Sections 10, 19, 29, and 30, Township 37N, Range 9E, and in Sections 23, and 24, Township 37N, range 8E, approximately 40 km north of Rudyard, Hill County, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

UCMP 131476, 131477: M1.

 

Locality: UCMP V-78098, Garbani 1, Havre Badlands, Hill County, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

UCMP 122200: M1.

 

Locality: UCMP V-81234, Put’s Plunder, Kennedy Coulee, Sections 10, 19, 29, and 30, Township 37N, Range 9E, and in Sections 23, and 24, Township 37N, range 8E, approximately 40 km north of Rudyard, Hill County, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

UCMP 131478: M1.

 

ROWE, CIFELLLI, LEHMAN & WEIL, 1992

Locality: Terlingua local fauna, OMNH V58 (TMM 43057), 8 km NNE Study Butte, Brewster County, Big Bend of the Rio Grande, Texas.

Horizon: Basal upper shale member, Agua Formation.

Biostratigraphy:

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

Material:

OMNH 22682:

OMNH 25014: Upper first molar.

 

Near clarki EATON & CIFFELI, 1988

Locality: Kaiparowits Plateau, Southern Utah.

Horizon: Wahweap Formation.

Biostratigraphy:

Age: Aquilian in age, Lower Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

Number: Not given:

_____________________________________________________________________________________

Species: milliensis EATON, 1993
Etymology: For the occurrence of this specimen along the banks of Mill Creek, Kane County, Utah.

Holotype: MNA V5801

Locality: Along the banks of Mill Creek, Paunsaugunt Plateau, Kane County, Utah.

Horizon: Unknown.

Biostratigraphy:

Age: Late Cretaceous.

Material: LM1.