Rhineastes eruciferus, Cape, (sp.)

Ceratodus eruciferus . Cope. 1876. Proc. Acad. Nat. 8ci. Philadel., p. 259.

A number of fragments of cranial bones are referred to this species after comparison with the type from the " Fort Union " beds of Montana. The sculpture consists of strong parallel or divergent ribs that, in places, frequently coalesce and are sometimes interrupted; when divergent, additional ribs are intercalated at intervals. Fragments of spines with parallel grooves and ridges, running in the direction of the length, are thought to belong to the same fish. These remains resemble, somewhat, the corresponding parts of some of the species of Rhineastes described by Cope from the Tertiary of the v/estern States, and are here assigned, at least provisionally, to that genus.

Belly River series, E.ed Deer river, 1901.