[1] [2] Named by Lupton (1916), the formation is readily divisible into upper and lower members on the basis of both lithologic character and depositional history.

Tectonic rejuvenation of adjacent provenance areas near the present Mount Nebo and Fish Lake Plateau shed coarser clastics eastward into the shallow seaway.

[4] A diverse collection of 13 species of shark teeth from the lower part of the Ferron Sandstone include: Hybodus sp., Ptychodus cf.

Cretalamna appendiculata (Agassiz, 1835), Squalicorax sp., Pseudohypolophus mcnultyi (Thurmond, 1971), Protoplatyrhina hopii Williamson, Kirkland and Lucas, 1993, Ischyrhiza schneideri (Slaughter and Steiner, 1968), and Ptychotrygon triangularis (Reuss, 1844).

[6] Other vertebrates include a pteranodontoid pterosaur represented by wing bones,[7] crocodilian teeth, a turtle shell fragment, and a small ornithopod ilium.