HECKERT, SPIELMANN, LUCAS & HUNT, 2007

Locality: Placerias quarry (UCMP A269, MNA 207C), Big Hollow Wash near Romero Springs, a small valley 6 1/2 miles (approximately 10.4 km) S 65"W of St. Johns, Apache County, Arizona.
Note: Located 0.3 miles northwest of Romero Springs at approximately Long. 109'28'W and lat. 34"27'N on the USGS St. Johns quadrangle of 1921.

Horizon: Bluewater Creek Formation, Lower Chinle Group.

Biostratigraphy:

Age: Adamanian, Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

UCMP A269/126847: Paramedian osteoderm fragment.

UCMP A269/136/744: Incomplete right paramedian fragment.

Locality: NMMNH L-3252, Zuni Mountains, West Central New Mexico.

Horizon: Bluewater Creek Formation, Lower Chinle Group.

Biostratigraphy:

Age: Adamanian, Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

NMMNH P-28422: Osteoderm fragment.

 

Locality: Blue Hills, East-Central Arizona.

Horizon: Blue Mesa Member, Petrified Formation.

Biostratigraphy:

Age: Adamanian, Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

UCMP 7307/27049: Osteoderm.

 

Locality: L-7 Ranch near Cedar Hill, Crosby County, Western Texas.

Horizon: Tecovas Formation, Chinle Group (Dockum Group).

Biostratigraphy:

Age: Adamanian, Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

TTUP 10079: Incomplete carapace.