Full reference: L. G. Barnes. 1973. Praekogia cedrosensis, a new genus and species of fossil pygymy sperm whale from Isla Cedros Baja California, Mexico. Contributions in Science, Natural History Museum of Los Angeles County 247:1-20
Sister taxa: none
Type specimen: UCR 15229. Its type locality is Arroyo Delphin, which is in a Messinian coastal sandstone/conglomerate in the Almejas Formation of Mexico.
Ecology: aquatic carnivore