Cephalopoda - Tarphycerida - Estonioceratidae

Full reference: E. O. Ulrich, A. F. Foerste, A. K. Miller and W. M. Furnish. 1942. Ozarkian and Canadian cephalopods, Part I: Nautilicones. Geological Society of America Special Papers 37:1-157

Belongs to Aphetoceras according to E. O. Ulrich et al. 1942

Sister taxa: Aphetoceras americanum, Aphetoceras attenuatum, Aphetoceras boreale, Aphetoceras evolutum, Aphetoceras farnsworthi, Aphetoceras oderi, Aphetoceras subcostulatum

Ecology: fast-moving nektobenthic carnivore