Genus: Tenontosaurus OSTROM, 1970
Etymology: Greek, tenon (masculine),"sinew," in reference to ossified tendons along the vertebral column, and Greek, sauros (masculine), lizard.
= Tenantosaurus BROWN vide CHURE & McINTOSH, 1989
Etymology:

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.

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: 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).


_____________________________________________________________________________________

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: