Prionocyclus hyatti (Stanton) 1893
form of P. hyatti, 42mm dia.
pseudoplacenta (Hyatt) 1903
From the Lower Ferron Sandstone Member
carlislensis Morrow 1935
The only specimen of Scaphites I have found from this
biozone in Utah,
45mm long, from the Lower Ferron Member near Mounds.