Genus: Tenontosaurus OSTROM, 1970
Etymology: Greek, tenon (masculine),"sinew," in reference to ossified tendons along the vertebral column, and Greek, sauros (masculine), lizard.
= Eureodon BROWN vide CHURE & McINTHOSH, 1989 (nomen nudum)
= Tenantosaurus BROWN vide CHURE & McINTHOSH, 1989 (nomen nudum)
Note: The names, Eureodon kaiseni and Tenantosaurus kaiseni, coined in the 1930s by Barnum Brown but never published, appear on American Museum of Natural History file photographs of the “camptosaurid” specimen (AMNH 3034) that is referred to Tenontosaurus in OSTROM, 1970 , the nmes were published by CHURE & MCINTOSH, 1989 (OLSHEVSKY, 1991) T. tillettorum

Species: tillettorum OSTROM, 1970
Etymology: Named for the Lloyd Tillett family of Lovell, Wyoming, to whom we are indebted for assistance and hospitality extended to our field parties.
= Tenotosaurus tilletti OSTROM, 1970
= Tenantosaurus kaiseni BROWN vide CHURE & McINTOSH, 1989
Etymology: In honor of Peter C. Kaisen.

Holotype: AMNH 3040

Locality: AMNH 33-1, SW 1/4, Sec. 26, T7N, R16E, Wheatland County, Montana.

Horizon: UNIT VII, 60 feet (18M0 below Unit VIII, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material: A partial skeleton lacking skull and fore limbs.

Paratypes:

YPM PU 16338

Locality: YPM PU 48-1, T6N, R15 or 16E, Wheatland County, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material: A partial skeleton.

Manus and pes.

Pelvis.

YPM 5456

Locality: YPM 64-37, NW 1/4, Sec 24, T5S, R28E, Big Horn County, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material: Skull and skeleton.

Referred material:

GIGNAC, MAKOVICKY, ERICKSON & WALKS, 2010

Locality: Section 14, Twp. 54N, Rang 92W, Park County, Wyoming.

Horizon: Upper Little Sheep Mudstone Member (Unit V), Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

FMNH PR 2261: Partially articulated skeleton.

Note: With bite marks from Deinonychus antirrhopus on right fibula, left radius.

 

NUDDS, LOMAX & TENNANT, 2022

Locality: Private land, The Kelly Ranch, Weatland County, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian-Early Albian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

MANCH LL12275: Semi-complete skull, complete vertebral column (atlas, axis, cervical, dorsal, sacral and caudal series) minus most caudal neural spiens, paired scapulae, coracoids and sternal plates, humeri, ulnae and radii, near complete manus with carpus, ilia, sichia, pubes, femora, fibulae, and tibiae, tarsus and pes complete.

Note: Found with 12 gastroliths and 2 fragmentary Deinonychus antirrhopus teeth.

 

OSTROM, 1970

Locality: AMNH 03-29, T4S, R29E, Cashen Ranch, Big Horn County, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 5854: Vertebrae, and ?coracoid.

 


Locality: AM 31-3, “Cashen Pocket”, NW 1/4, Sec. 33, T4S, R29E, 0.25 miles (0.4 km) SSE of Cashen Ranch House, Big Horn County, Montana.

Horizon: Unit V, 8 feet (2.4m) below Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3010: Partial skeleton.

 


Locality: AM 31-4, “Cashen Pocket”, NE 1/4, Sec. 33, T4S, R29E, 0.5 miles (0.8 km) SE of Cashen ranch house, Big Horn County, Montana.

Horizon: Unit V, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3013: Sacral vertebrae and ribs, scapula, coracoid, carpus, tibia, fibula and tarsus.

 


Locality: AM 31-5, “Cashen Pocket”, NW 1/4, Sec. 33, T4S, R29E, 0.25 mile (0.4 km) SSE of Cashen ranch House, Big Horn County, Montana.

Horizon: Unite VII, 10 - 20 feet (3 to 6 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3020: Foot bones.

 

 

Locality: AM 31-6, “Cashen Pocket”, NW 1/4, Sec. 33, T4S, R29E, 0.25 mile (0.4 km) SE of Cashen Ranch House, Big Horn County, Montana.

Horizon: Unit VI, or possibly uppermost part of Unit V, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3012: Left scapula, left tibia and left fibula, sacral vertebrae and ribs, coracoid, carpus, left tibia, and tarsus of a juvenile.

 


Locality: AM 31-7, “Cashen Pocket”, NW 1/4, Sec. 33, T4S, R29E, 0.5 miles (0.8 km) SE of the Cashen Ranch House, Big Horn County, Montana.

Horizon: Unit V, 23 feet (7 m) below Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3014: Partial skeleton.
Note: Found with Deinonychus (AMNH 3015) and eggshells of Deinonychus.

 


Locality: AM 31-8, NW 1/4, Sec. 33, T4S, R29E, 0.25 miles (0.4 km) south of Cashen Ranch House, Big Horn County, Montana.

Horizon: Unit V, approximately 20 feet (6 km) below Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3011: Partial skeleton.

 


Locality: AM 31-10, SW 1/4, Sec. 16, T4S, R26E, 0.25 mile (0.4 km) West of AM 31-9, 5 miles NE of Pryor, Big Horn County, Montana.

Horizon: Unit VII, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3017: Partial skeleton.

 


Locality: AM 32-2, SW 1/4, Sec. 8, T5S, R30E, 6 miles (9.6 km) SE of Cashen ranch House, on Mott Creek, Big Horn County, Montana.

Horizon: Unknown, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3031: Partial skeleton.

 


Locality: AM 32-5, SW 1/4, Sec. 8, T5S, R30E, 6 miles (9.6 km) SE of Cashen ranch House, on Mott Creek, Big Horn County, Montana.

Horizon: Unknown, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3034: Most of vertebral column - 1st dorsal to 3 ft of end of tail, femur, tibia, fibula, metatarsals, some ribs, partial lower jaw.

 


Locality: AM 33-3, Sec. 26, 27, 34 or 35, T7N, R16E, Wheatland County, Montana.

Horizon: Unit VII? Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3043: Partial skeleton.

 

 

Locality: AM 33-4, Sec. 34, T7N?, R16E, Wheatland County, Montana.

Horizon: Unknown, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3044: Fragmentary parts of skeleton, small species.

 

 

Locality: AM 33-5, Sec. 34, T7N? R16E, Wheatland County, Montana.

Horizon: Unknown, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3045: Fragmentary parts of a skeleton.

 

Locality: AM 33-8, ?Sec. 16 or 17, T7S, R24E, 6 miles? (9.6 km) SE of Bridger, Carbon County, Montana.

Horizon: Unknown, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3050: Fragments of lower jaw and 3 claws.

 


Locality: AM 38-1, ?NE 1/4, Sec. 20, T5S, R28E, approximately 8 miles (12.8 km) Sw of Cashen ranch house and 1/5 mile (2.4 km) west of Thor K. Lande ranch on Push Creek, Big Horn County, Montana.

Horizon: Unit V, VI or VII, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3062: 33 articulated caudal vertebrae.

 


Locality: AM 38-3, T4S, R29E, 2 miles E of Cashen’s Place, Big Horn County, Montana.

Horizon: Unknown, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3061: Partial skeleton.

 


Locality: AM 38-4, T7N, R16E, Wheatland County, Montana.

Horizon: Unknown, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3063: Partial skeleton.

 

Locality: OMNH localtiy V184, OU 40-11, Se 1/4, Sec. 32, T4S, R29E, 1.25 miles (2 km) SSW of Cashen ranch house, 400 yards (366 m) west of road, Big Horn County, Montana.

Horizon: Unit V, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

University of Oklahoma OMNH 10132 (OU 11): Partial skeleton.

 


Locality: OU 40-12, SE 1/4, Sec. 32, T4S, R29E, 1.25 miles (2 km) SSW of Cashen ranch house near OU 40-11, Big Horn County, Montana.

Horizon: Unit V, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

University of Oklahoma OU 12:

 


Locality: Princeton University 49-1, NW 1/4, Sec. 34, T58N, R95W. 1.75 miles (2.8 km) SW of Tillett Fish Hatchery, Big Horn County, Montana.

Horizon: Unit V, 35 to 40 feet (10.6 to 12.2 m) below Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 16514: Partial skeleton.

 


Locality: YPM 62-4, NW 1/4, Sec. 12, T52N, R92W, 4 miles (6.4 km) WSW of Shell, Big Horn County, Wyoming.

Horizon: Unit VII, 7 feet (2.1 m) above VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 4882:

 


Locality: YPM 62-14, NW 1/4, SE 1/4, Sec. 28, T58N, R95W, 1.75 miles (3 km) WSW of Tillett Fish Hatchery, Big Horn County, Wyoming.

Horizon: Unit V, 20 feet (6 km) below Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

BB #1: Partial skeleton.

 


Locality: YPM 63-19. NW 1/4, Sec. 28, T58N, R95W, 30 yards 927 m) NW of YPM 63-18, Big Horn County, Wyoming.

Horizon: Unit VII, 0 to 8 feet (0 to 2.4 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5099:

 

Locality: YPM 63-32, NE 1/4, Sec. 29, T58N, R95W, 500 yards (455 m) due west-”over the scarp”-of YPM 63-28, Big Horn County, Wyoming.

Horizon: Unit VI, 1 to 3 feet (0.3 to 0.9m) below Unit VII, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 4904:

 


Locality: YPM 64-17, SW 1/4, Sec. 33, T4S, R29E, 1.25 mile (2 km) SSW of Cashen ranch house, Big Horn County, Montana.

Horizon: Unit VII, 11 feet (3.3 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5535:

 


Locality: YPM 64-26, NW 1/4 Sec. 35, T4S, R29E, 160 yards (146 m) SE of YPM 64-25, Big Horn County, Montana.

Horizon: Unit VII, approximately 28 feet (8.5 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5459: Partial skeleton.

 

Locality: YPM 64-27, SE 1/4, Sec. 35, T4S, R29E, 300 yards (275 m) SE of YPM 64-26, Big Horn County, Montana.

Horizon: Unit VII, 10 feet (3 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5195, 5417:

 


Locality: YPM 64-36, SE 1/4 Sec. 12, T5S, R28E, 3.75 miles (6 km) SW of Cashen ranch house, 400 yards (366m) NW of the Junction of West Buster and Middle Buster Creeks, Big Horn County, Montana.

Horizon: Unit VII, 1 foot (0.3 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5460: Partial skeleton.

 

Locality: YPM 64-37, NW 1/4 Sec. 24, T5S, R28E, 5.5 miles (8.8 m) SW of Cashen ranch house, 600 yards (550 m) west of West Buster Creek, Big Horn County, Montana.

Horizon: Unit VII, 14 feet (4.2 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5456, 5457, 5483:


YPM 5458

Locality: YPM 64-41, NW 1/4 Sec. 21, T5S, R28E, 1 mile (1.6 km) west of Thor Lande ranch on Push Creek, Big Horn County, Montana.

Horizon: Unit VII, 8 feet (2.4 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material: Partial skeleton.


Locality: YPM 64-43, NE 1/4 Sec. 20, T5S, R28E, 659 yards (595 m) west of YPM 64-41, Big Horn County, Montana.

Horizon: Unit VII, 3 feet (0.9 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5464, 5477:

 

Locality: YPM 64-37, NE 1/4 Sec. 19, T8S, R25E, 5.5 miles (8.8 km) NNW of Warren, Carbon County, Wyoming.

Horizon: Unit VII, 52 feet (15.8 m) below Unit VIII, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5463:

 

Locality: YPM 64-49, SE 1/4 Sec. 12, T8S, R24E, 7 miles (11.2 km) NNW of Warren Carbon County, Montana.

Horizon: Unit VII, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5465:

 


Locality: YPM 64-52, SE 1/4 Sec. 29, T7S, R24E, 2.5 miles (4 km) SSE of Tom Edwards ranch house, Carbon County, Montana.

Horizon: Unit VII, 35 feet (10.5 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5467:

 


Locality: YPM 64-54, NW 1/4 Sec. 17, T7S, R24E, 1 mile (1.6 km) NE of Tom Edwards ranch and 60 yards (55 m) east YPM 64-53, Carbon County, Montana.

Horizon: Unit V, 8 feet (2.4 m) below Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5469:

 

Locality: YPM 64-57, NE 1/4 Sec. 17, T7S, R24E, 1.5 miles (2.4 km) NE of Tom Edwards ranch, Carbon County, Montana.

Horizon: Unit VII, 4 feet (1.2 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5470:

 


Locality: YPM 64-58, NE 1/4 Sec. 17, T7S, R24E, 1.5 miles (2.4 km) NE of Tom Edwards ranch, on NW side of knob, Carbon County, Montana.

Horizon: Unit VII, 4 feet (1.2 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5471, 5472: Skulls and jaw fragment.

 

Locality: YPM 64-63, SE 1/4 Sec. 29, T6S, R24E, 220 yards (200 m) north of YPM 64-64, Carbon County, Montana.

Horizon: Unit VI, 7 feet (2.1 m) below Unit VII, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5468, 5480:

 

Locality: YPM 64-64, SE 1/4 Sec. 29, T6S, R24E, 4.25 miles (6.8 km) NNE of Tom Edwards ranch, 3.75 miles (6 km) ESE of Bridger railroad station, Carbon County, Montana.

Horizon: Unit VII, 18 feet (5.5 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5461: Partial skeleton.

YPM 5523:

 

 

Locality: YPM 64-67, SE 1/4 Sec.31, T5S, R24E, 5 miles (8 km) NE of Bridger railroad station, Carbon County, Montana.

Horizon: Unit VII, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5473:

 


Locality: YPM 64-71, NW 1/4 Sec. 5, T6S, R24E, 4.5 miles (7.2 km) NE of Bridger railroad station, 0.5 mile (0.8 km) north of Bluewater Creek, Carbon County, Montana.

Horizon: Unit VII, 9 feet (2.7 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5475, 5481:

 

 

Locality: YPM 64-72, SW 1/4 Sec. 5, T6S, R24E, 0.25 mile (0.4 km) south of YPM 64-71, Carbon County, Montana.

Horizon: Unit VII, 5 feet (1.5 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5474:

 


Locality: YPM 64-74, NE 1/4 Sec. 17, T7S, R24E, 1.5 miles (2.4 km) NE of Tom Edwards ranch, on north side of knob, Carbon County, Montana.

Horizon: Unit VII, 14 feet (4.2 km) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5478: Partial skeleton.

 


Locality: YPM 64-75, NE 1/4 Sec. 17, T7S, R24E, 1.5 miles (2.4 km) NE of Tom Edwards ranch on north side of knob, Carbon County, Montana.

Horizon: Unit VII, 14 to 17 feet (4.2 to 5 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5466: Partial skeleton.

 

Locality: YPM 65-1, SE 1/4 Sec. 8, T7S, R24E, 1.75 miles (2.8 km) NE of Tom Edwards ranch, 200 yards (183 m) north of Knob, Carbon County, Montana.

Horizon: Unit VII, 25 feet (7.6 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5462:



Locality:

Horizon:

Biostratigraphy:

Age:

Material:

YPM 5457, 5462: Partial skeletons.

 


Locality: YPM 64-38, SE 1/4 Sec. 14, T5S, R28E, 1100 yards (0.9 km) NW of YPM 64-37 on opposite side of mesa, Big Horn County, Montana.

Horizon: Unit V? Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

YPM 5476:


FORSTER, 1990

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

MCZ 4087, 4166, 4385, 4388, 4390, 7556-7558, YPM 5117, 5146, 5399 (cast), 5427, 5479:

 


FORSTER, 1990

Locality: Cashen Ranch, Big Horn County, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3022: Left humerus, left and right ulna, left femur and left tibia of a juvenile.

AMNH 3023: Right humerus, right ulna and left tibia.

OU 10144: Skeleton of a baby lacking skull.

Reconstruction of the skeleton after Carpenter and Alf, 1994.


Locality: Big Horn County, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

OMNH undivided: Right scapula, left humerus, 2 left ulnae, right ulna, 3 left tibiae, and right femur of a juvenile of possibly 4 individuals.

 

GALTON 1989

Locality: Edwards Ranch, NW 1/4, Sec. 17, T75, R24E, Carbon County, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

MCZ 4205: Nearly complete skull and skeleton (braincase, mandible, tail, shoulder and pelvic girdles, ribs, limbs, feet)

 

MAXWELL, 1995, MAXWELL & OSTROM, 1995

Locality: MOR CL-103, 2.1 km north of Bluewater Creek Fish Hatchery, Carbon County, Montana.

Horizon: Base of Unit VII, upper Himes Member of Moberly, 1960, Cloverly Formation.

Horizon: Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Late Aptian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

MOR 682: A near-complete sub-adult specimen.

 

MAXWELL & HORNER, 1994

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

MOR 679:
Note: Juvenile.

 

PARSONS & PARSONS, 2000

Locality: MOR CL-016, Middle Dome Area, Wheatland County, Montana.

Horizon: Lower Cloverly Formation, basal unit VII.

Biostratigraphy:

Age: Early Cretaceous.

Material:

Number: Not given:

 

WERNING, 2012

Locality: OMNH locality V821, Atoka County, Oklahoma.

Horizon: Antlers Formation.

Biostratigraphy:

Age: Cashenranchian, Aptian-Albian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

OMNH 2531, 8137: Subadult.

OMNH 2926: Subadult.

OMNH 10134: Subadult.

OMNH 16563: Subadult.

OMNH 34191: Subadult.

OMNH 34783: Subadult.

OMNH 34784: Subadult.

OMNH 34785: Juvenile.

OMNH 63525: Subadult.

FMNH PR2263: Juvenile.

OMNH 58340: Nearly complete and articulated subadult with only the mid-section of the tail missing due to weathering.

Note: It has 4 pathologicl elements: 2 left ribs (L7 and L10), a right rib (R10), left pedal phalanx I-1, and th eleft metacarpal IV. Tht pathologes were classified as traumatic (from injury), infectious (from viral, bactrial, and fungal foregin agents), traumatic-infectious (infection following an injury), or developmental (caused by growth disturbance during developement) sensu Hanna (2002) (HUNT, PETERSON, FREDERICKSON, COHEN & BERRY, 2019).


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Species: dossi WINKLER, MURRY & JACOBS, 1997
Etymology: In honor of James Doss who together with is wife Dorothy donated the specimens.
= genus nova WINKLER, MURRY & JACOBS, 1989

Holotype: Fort Worth Museum of Science and History, Fort Worth Texas, FWMSH 93B1

Locality: SMU 226-1, Doss Ranch, Parker County, Central Texas.

Horizon: Twin Mountains Formation, Trinity Group.

Biostratigraphy:

Age: Comanchean, Lower Cashenranchian age, Early to Middle Albian Stage, Middle Gallic subepoch, upper Early Cretaceous Epoch, Early Cretaceous.

Material: Skull and skeleton.

Tenontosaurus dossi (after WINKLER, MURRY & JACOBS, 1997), Holotype: FWMSH 93B1

Referred material:

FWMSH 93B2: Partial skull and partial skeleton.

FINSLEY, 1996: Skin impressions.

 

Locality: Butler Farm, Wise County, North-Central Texas.

Horizon: Paluxy Church Formation, Trinity Group.

Biostratigraphy:

Age: Comanchean, Lower Cashenranchian age, Early to Middle Albian Stage, Middle Gallic subepoch, upper Early Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given:

 

Locality: Greenwood Canyon, Montague County, Texas.

Horizon: Paluxy Church Formation, Trinity Group.

Biostratigraphy:

Age: Comanchean, Lower Cashenranchian age, Early to Middle Albian Stage, Middle Gallic subepoch, upper Early Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given: