Species: olseni SUES, 1992
Etymology:

Holotype: USNM 44587

Locality: USNM locality 39981, Tomahawk Locality, field-number 1988-1), 0.16 km (0.1 miles) east of the eastern branch of Little Tomahawk Creek along the northeastern side of Old Hundred Road (VA 652), near Midlothian, Lat. 77°40’15"N, long 37°27’45"W, Hallsboro 7.5 Minute Quadrangle, Chester County, Virginia.

Horizon: Tomahawk Creek Member, Turkey Branch Formation, Newark Supergroup.

Biostratigraphy:

Age: Early to Middle Carnian Stage, Lower Late Triassic Epoch, Late Triassic.

Material: Four associated dorsal osteoderms and fragments of additional osteoderms.

Hypodigm.

USNM 448580, 448582, 448583: Dorsal osteoderms.

USNM 448581, 448585, 4458588: Isolated lateral spines of osteoderms.

USNM 448586, 448589: Fragments of osteoderms.

USNM 448584: Incomplete ?posterior dorsal vertebrae.

Also, there are numerous small pieces of osteoderms and indeterminate bones with the characteristic ornamentation.