SUMIDA, LOMBARD, BERMAN & HENRICI, 1999

Locality: Valley of the Gods (i), NE ¼, NW ¼, sec. 29, T40S, R19E, San Juan County, Utah.

Horizon: Halgaito Shale, equivalent of Lower Cutler Formation.

Biostratigraphy:

Age: Virgilian, upper Stephanian, Upper Silesian Series, Gzelian Epoch, Late Pennsylvanian (Late Carboniferous).

Material:

CMNH: