Cephalopoda - Orthocerida - Proteoceratidae

Alternative combination: Orthoceras rogersensis

Synonym: Treptoceras praenuntium Flower 1942

Belongs to Isorthoceras according to R. C. Frey 1995

Sister taxa: Isorthoceras albersi, Isorthoceras bisignatum, Isorthoceras dalecarlense, Isorthoceras junceum, Isorthoceras subcostatum