Full reference: R. H. Flower. 1952. New Ordovician Cephalopods from Eastern North America. Journal of Paleontology 26(1):24-59
Type specimen: RHF 43, a shell. Its type locality is Little Monty Bay, SE of Chazy, which is in an Ashbyan reef, buildup or bioherm lime mudstone/grainstone in the Valcour Formation of New York.
Ecology: nektonic carnivore