Cephalopoda - Ellesmerocerida - Protocycloceratidae

Alternative combination: Orthoceras catulus

Belongs to Protocycloceras according to Billings 1865

Sister taxa: Protocycloceras abnorme, Protocycloceras arkansasense, Protocycloceras becki, Protocycloceras doniphonense, Protocycloceras furtivum, Protocycloceras gangshanense, Protocycloceras geronticum, Protocycloceras lamarcki, Protocycloceras levisense, Protocycloceras manitouense, Protocycloceras mendax, Protocycloceras odenvillense, Protocycloceras ordinatum, Protocycloceras philipsburgense, Protocycloceras smithvillense, Protocycloceras xerxes

Ecology: nektobenthic carnivore