Locality: Unknown, "Lance Creek in Niobrara County, Wyoming."
Horizon: Unknown, Hell Creek Formation?
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
ANSP 8947: Phalanx.
_____________________________________________________________________________________
ANDERSON, 1999
Locality: Bear Creek, 28-30 miles south and east of Fort Peck, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
University of Michigan, UM 17062: Left half of pelvis and ribs.
_____________________________________________________________________________________
ANONYMOUS, 1997
Locality: Maurice Williams’s Ranch, Cheyenne River Indian Reservation,
near Faith, Hill City, South Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Field Museum: Quadrate, pes phalange, teeth and 3 caudal vertebrae (one labelled “stomach
content”).
Note: Found with “Sue”.
_____________________________________________________________________________________
BREITHAUPT, 1982
Locality: UW locality V-79032, NE 1/4, SE 1/4, NE 1/4 of sec. 3, T18N, R100W,
of the Black Buttes Quadrangle, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
UW 15011: Worn teeth.
_____________________________________________________________________________________
BREITHAUPT, 1985
Locality: Wyoming.
Horizon: "Mesaverde" Formation.
Biostratigraphy:
Age: Judithian Age, Campanian Stage, Senonian subepoch, Upper Gulf epoch,
Late Cretaceous.
Material:
Number: Not given:
_____________________________________________________________________________________
BREITHAUPT, 2001
Locality: Hoodoo Point, SDSM V9717, Thunder Basin National Grassland, Northeastern
Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, Upper Senonian subepoch, Upper
Upper Gulf epoch, Late Cretaceous.
Material:
Number: Not given: 1 specimen.
_____________________________________________________________________________________
CARPENTER, 1979
Locality: Owl Creek, Weld County, Colorado.
Horizon: Laramie Formation.
Biostratigraphy:
Age: Lancian Age, upper Maastrichtian Stage, uppermost Senonian Subepoch,
Upper Upper Gulf Epoch, Late Cretaceous.
Material:
UCM 18953: Right maxilla.
_____________________________________________________________________________________
CLOS, 2004
Locality: Liscomb Bone Bed on the west bank of the Colville River, Alaska.
Horizon: Prince Creek Formation.
Biostratigraphy:
Age: Late Cretaceous.
Material:
Number: Not given: Metatarsal of a sub adult.
_____________________________________________________________________________________
DAVIS, 1983
Locality: 19.6 km (12.2 mi.) southwest of Glenn Spring, 1.1 km (0.7 mi.) south
of the River Road at Woodson Pettits Turnoff, located at 29°1’52”N.,
103°14’48” on Road Camp 7.5’ Topographic Quadrangle,
Big Bend National Park, Brewster County, Texas.
Horizon: Javelina Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Texas Memorial Museum 41442-1: Right quadrate and fragments.
_____________________________________________________________________________________
ERICKSON & OLSON, 1996
Locality:
Horizon:
Biostratigraphy:
Age: Late Cretaceous.
Material:
UCMP 140601: Teeth marks from a tyrannosaurid on a proximal pedial phalanx.
_____________________________________________________________________________________
ESTES, 1964
Locality: UCMP localities, V-5618, V-5622, V-5625, V-5715, V-5717, V-5820,
V-5921, V-5922, Eastern Wyoming.
Locality: UCMP V-5003, S 1/2, Sec. 20, T37N, R64W, Lance Creek, 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.
Locality: UCMP V-5620, Lull Quarry, near the head of a tributary of Buck Creek,
Powder River Basin, Niobrara County (Formerly Converse County), Wyoming.
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.
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.
Locality: UCMP V-5818: Anthills built around the rim of the only blowout on
the south side of a canyon that empties into a tributary of Hancock Creek,
Eastern 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.
U. C. Loc. V-5712: Tibia.
U. C. Loc. V-5916: Dentary with a complement of teeth.
_____________________________________________________________________________________
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 3646: Teeth.
_____________________________________________________________________________________
DAESCHLER & FIORILLO, 1989/FIORILLO & DAESCHLER, 1990
Locality: Vicinity of Fort Yates, North Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
ANSP 17317: Dentary fragment.
ANSP 17109: Jaw fragment.
_____________________________________________________________________________________
JACOBSON & SROKA, 1998
Locality: A private ranch in Corson County, South Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given: Bone beds. A partial skeleton, isolated limbs and jaw fragments.
_____________________________________________________________________________________
LARSON, NELLERMOE & GOULD, 2003
Locality: Corson County, South Dakota.
Horizon: Lower Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given: Edmontosaurus bone bed.
_____________________________________________________________________________________
= Anatosaurus sp LULL & WRIGHT, 1942
Locality: Near Cook Ranch on Crooked Creek, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
AMNH 5894: Posterior part of skeleton, hind limbs nearly complete, impressions
of skin on tail.
= Anatosaurus sp
Locality: Hell Creek, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
AMNH 5888: Pubis.
AMNH 5879: Humeri, femur, tibia, fibula, and lower jaws.
AMNH 1652: Ilium, ischium, pubis and fibula.
= Anatosaurus sp
Locality: Gilbert Creek, 150 feet above the Fox Hills Formation, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
AMNH 5896: Limb bone, several vertebrae and jaws.
AMNH 5897: Foot bones and caudals.
= Anatosaurus sp
Locality: Big Cry Creek, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
AMNH 5058: Skull, jaws, nearly complete skeleton now mounted in the Colorado
Museum of Natural History.
= Anatosaurus sp
Locality: Sec. 22, T29N, R43W, McCone County, about 28 miles south of Ft.
Peck, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
University of Michigan: Mounted skeleton.
= Anatosaurus sp
Locality: Near Glendive, Dawson County, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
AMNH 5046: Skull of an immature individual.
= Anatosaurus sp
Locality: Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
USNM 2413: Scapula, coracoid, fibula, and hind limbs.
USNM 7737: Complete tail with sacrum, femur and tibia.
= Anatosaurus sp
Locality: Lance Creek, Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
USNM 2109: Cervical and dorsal vertebrae.
YPM 618: Skull.
= Anatosaurus sp
Locality: Schneider Creek, Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
YPM 3217: Lower jaw and scapula.
_____________________________________________________________________________________
LYSON & GARSTKA, 1998
Locality: NW ¼ of the SW ¼, of section 15 T133N R106W, Slope
County, North Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given: Caudal, pelvis and hind limb with skin impressions.
_____________________________________________________________________________________
McINTOSH, 1981
Locality: Sheep Mountain, Carter County, Montana.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
CM 30745: Rami of mandible, 3 dorsal centra, 2 humeri, right ulna, 3 pubes,
metatarsal, and ungual of more than 1 individual.
CM 38321: Small right dentary.
CM 9970: Right ramus.
CM 38324: Astragalus, 3 phalanges, 2 unguals.
CM 38325: Tooth.
CM 38328: Metatarsal.
CM 38333: Pubis.
CM 38329: Caudal.
Locality: 15 miles south of Camp Crook, Harding County, South Dakota.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
CM 11745: 5 dorsals, 5 sacrals, 27 caudals, pelvis, hind limbs, and feet.
Locality: Hell Creek, Garfield County, Montana.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
CM 1652: Left ilium, pubis, ischium, and fibula.
Locality: Billy Creek, Garfield County, Montana.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
CM 38355: Right tibia.
_____________________________________________________________________________________
MICHARD, 1986
Locality: Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Paleontology Institute of Paris: Skull and nearly complete skeleton.
_____________________________________________________________________________________
NELMS, 1992
Locality: Kogosukruk Tongue, near Ocean Point, North Slope, Alaska.
Horizon: Prince Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given:
_____________________________________________________________________________________
OSTROM, 1961
Locality:
Horizon:
Biostratigraphy:
Age:
Material:
AMNH 5236:
_____________________________________________________________________________________
ROHRER & KONIZESKI, 1960
Locality: Cattle Creek, Garfield County, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
USNM 22102: Nearly complete dentary.
Note: May be a new species.
_____________________________________________________________________________________
SPENCER, TURNER & CHADWICK, 2001
Locality: Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given: Teeth, and dentary of a juvenile.
_____________________________________________________________________________________
STENERSON & O’CONNER, 1994
Locality: Northwestern South Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given:
_____________________________________________________________________________________
SNYDER, McLAIN, WOOD & CHADWICK, 2020
Locality: Hanson Ranch (HR), northern Niobrara County, Eastern Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given: 12,503 skeletal elements.
_____________________________________________________________________________________
TEDESCO, HALVORSEN & COOPER, 1998
Locality: East central Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given: Bone bed.
_____________________________________________________________________________________
TOKARYK, 2002, TOKARYK & BYRANT, 2004
Locality: SMNH Locality 72F07-0022, in the Frenchman River valley, 215 miles
southwest of Regina, near the North Dakota Border, Saskatchewan Province, Canada.
Horizon: Frenchman Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Note: 28.3 m below the K-T boundary.
Material:
SMNH P2523.288, P2523.289: Teeth.
_____________________________________________________________________________________
TRIEBOLD, 1997
Locality: Sandy Site, Harding County, South Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given:
_____________________________________________________________________________________
= Anatosaurus sp WIDEMAN & LOFGREN, 2001
Locality: McCone County, Montana.
Horizon: Uppermost Lance Formation (8 m below the base of the overlying Tullock
Formation).
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Raymond Alf Museum: Articulated right leg, ischium, and articulated tail with
tendons and skin impressions.
_____________________________________________________________________________________
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, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
SDSM 15149: More than 1000 teeth.
Locality: SDSM Locality V852, Hanson Locality, Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous
Material:
SDSM 15148: 161 teeth.
Locality: SDSM Locality V853, Leonard’s Lizard Site, Niobrara County,
Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
SDSM 15147: 25 teeth.
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, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
SDSM 12709: 7 teeth.
Locality: SDSM Locality V851A, Lower Zerbst Locality, Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
SDSM 15146: 3 teeth.
Locality: SDSM Locality V851B, Zerbst Hadrosaur Level, Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
SDSM 15158: 1 dentary.