Full reference: R. H. Flower. 1952. New Ordovician Cephalopods from Eastern North America. Journal of Paleontology 26(1):24-59
Type specimen: a specimen in the collection of G. Winston Sinclair, a shell. Its type locality is Lake St. George quarry, which is in a Turinian lagoonal/restricted shallow subtidal lime mudstone in the Gull River Formation of Canada.
Ecology: fast-moving nektobenthic carnivore