Full reference: B. J. Marples. 1952. Early Tertiary penguins of New Zealand. New zealand Geological Survey Paleontological Bulletin 20:1-66
Sister taxa: none
Type specimen: OM C.47.31, a set of limb elements (left tarsus). Its type locality is Duntroon (Kokoamu Greensand), which is in a Duntroonian marine limestone in the Kokoamu Greensand Formation of New Zealand.
Ecology: ground dwelling carnivore