Genus: Sauropelta OSTROM, 1970
Etymology: Greek, sauros (masculine), "lizard" and Greek, pleta (feminine), "small shield," in reference to dermal armor.
= Peltosaurus BROWN vide CHURE & McINTOSH, 1989/COPE, 1873
= Peltosaurus GLUT, 1972/COPE, 1873 (nomen nudum)

Species: edwardsorum OSTROM, 1970
Etymology: Named for Nell and Tom Edwards of Bridges, Montana, in appreciation of the hospitality and assistance they gave to Yale field crew.
= Sauropelta edwardsi OSTROM, 1970

Holotype: AMNH 3032

Locality: AMNH 32-3, NE 1/4, Sec. 20, T5S, R28E, E fork of Beauvaix Creek, Big Horn County, Montana.

Horizon: Cloverly Formation.
Biostratigraphy:

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

Material: Fragmentary skeleton with armor.

Note: 17-18 articulated caudal vertebrae from the distal portion of the tail including the terminal vertebrae with the most distal 9-10 vertebrae fused together and the tail has a kink ventrally at the ?11th vertebra in the series, and the distal portion of the fused vertebral mass are offset to the left at this point. (ARBOUR & CURRIE, 2011)

Referred material:

Locality: AM 31-9, SE 1/4, Sec. 16, T4S, R26E, 3.5 miles (5.6 km) north of Pryor, Yellowstone County, Montana.

Horizon: Unit V?, Cloverly Formation.

Biostratigraphy:

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

Material:

AMNH 3016: Partial skeleton.

 


Locality: AM 32-4, 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, Aptian-Albian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

AMNH 3033: Partial skeleton.

 

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

MNH 5855: Partial skeleton.

 


Locality: AM 32-6, SE 1/4, Sec. 32, T4S, R29E, 1.25 mile (2 km) SSW of Cashen Ranch House, Big Horn County, Montana.

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

Biostratigraphy:

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

Material:

AMNH 3035: Skull, lower jaw, fragmentary skeleton with armor.

After Carpenter, et al, 1999.


Locality: AM 32-7, SE 1/4, Sec. 32, T4S, R29E, 1.25 mile (2 km( SSW of Cashen House, Big Horn County, Montana.

Horizon: UNIV VI, 8 feet (2.4 km) Below Unit VII, Cloverly Formation.

Biostratigraphy:

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

Material:

AMNH 3036: Fragmentary skeleton with armor.

 

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

YPM 5179: Scapulocoracoid.

 


Locality: AMNH 03-28, T4S, R29E, Cashen Ranch, Big Horn County, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

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

Material:

AMNH 5853: Partial skeleton.

 


Locality: AMNH 04-9, T4S, R29E, Big Horn County, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

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

Material:

AMNH 5833: Scapula and radius.

 

Locality: YPM 62-10, SE 1/4, Sec. 26, T53N, R93W, 0.8 mile (1.2 km) WNW of Junction of Bentonite Company road and road to Kane, 4 miles (6.4 km) NE of Greybull, Wyoming.

Horizon: Unit VII, 5 to 8 feet (1.5 to 2.4 km) above Unit VI, Cloverly Formation.

Biostratigraphy:

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

Material:

YPM 5511, 5512, 5513:

 

Locality: YPM 64-20, SW 1/4 Sec. 36, T4S, R29E, 3 miles (4.8 km) ESE of Cashen Ranch House, 700 yards (640 m) NW of Point Creek, Big Horn County, Montana.

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

Biostratigraphy:

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

Material:

YPM 5511, 5512, 5513:
Note: The above has the same numbers as locality YPM 62-10.

 


Locality: YPM 63-16, NW 1/4, Sec. 28, T58N, R95W, 20 yards (18 M) SE of YPM 63-17, Big Horn County, Wyoming.

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

Biostratigraphy:

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

Material:

YPM 5296, 5297, 5298, 5402, 5405, 5408, 5409:

 


Locality: YPM 63-17, NW 1/4, Sec. 28, T58N, R95W, 20 yards (18m) NW of YPM 63-16, Big Horn County, Wyoming.

Horizon: Unit VII, 5 to 8 feet (1.5 to 2.4 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

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

Material:

YPM 4896, 4905:

 


Locality: YPM 63-18, NW 1/4, Sec. 28, T58N, R95W, 20 yards (18 m) NW of YPM 63-17, Big Horn County, Wyoming.

Horizon: Unit VII, 2 to 8 feet (0.6 to 2.4 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

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

Material:

YPM 5111-5115, 5118-5122, 5124, 5127, 5130, 5131, 5133, 5134, 5137, 5138, 5141, 5149, 5154-5159, 5161, 5163-5169, 5173, 5175-5179, 5181-5183, 5192, 5200, 5295, 5301-5305, 5307, 5309-5315, 5137, 5320-5327, 5333-5341, 5391, 5393, 5486-5498, 5528:

 


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

Material:

YPM 5069-5072, 5074, 5075, 5079-5084, 5086, 5094, 5095, 5098, 5101, 5102, 5105, 5108, 5109, 5142-5146, 5148, 5149, 5184-5189, 5191, 5194, 5196, 5198, 5350-5352, 5367, 5368, 5389, 5442, 5448, 5499-5503, 5505-5510, 5516, 5525-5527, 5529:

 

 

Locality: YPM 64-23, SW 1/4 Sec. 26, T4S, R29E, 2 miles (3.2 km) east of Cashen Ranch House on Horse Coulee, Big Horn County, Montana.

Horizon: Unit VI, 2 feet (0.6 m) below Unit VII, Cloverly Formation.

Biostratigraphy:

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

Material:

YPM 5300, 5522:

 

 

Locality: YPM 64-29, NE 1/4 Sec. 1, T5S, R29E, 300 yards (274 m) SE of YPM 64-28, Big Horn County, Wyoming.

Horizon: Unit VII, Cloverly Formation.

Biostratigraphy:

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

Material:

YPM 5517:

 

Locality: YPM 64-31, NE 1/4 Sec. 6, T5S, R29E, 2.25 miles (3.6 km) SW of Cashen Ranch House, Big Horn County, Montana.

Horizon: Unit VII, approximately 42 feet (12.8 m) above Unit VI, Cloverly Formation.

Biostratigraphy:

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

Material:

YPM 5531:

 


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

Material:

YPM 5521:

 


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

Material:

YPM 5520:

 

PARRISH & EATON, 1991

Locality: San Rafael Swell, Kaipirowits Plateau, Utah.

Horizon: Member? Cedar Mountain Formation.

Biostratigraphy:

Age: Age? Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given:

 


PARSONS & PARSONS, 2000

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

Horizon: Lower Cloverly Formation, basal unit VII.

Biostratigraphy:

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

Material:

MOR 1073: Fragmentary skull.
Note: PARSONS & PARSONS, 2002 report on a newly discovered parital premaxilla.