Family Monodontidae Gray 1821 (whale)
Full reference: J. E. Gray. 1821. On the natural arrangement of vertebrose animals. The London Medical Repository Monthly Journal and Review 15:296-310
Parent taxon: Delphinoidea according to J. Velez-Juarbe and N. D. Pyenson 2012
Sister taxa: Albireonidae, Delphinavus, Delphinidae, Graamocetus, Kentriodontidae, Lamprolithax, Miodelphis, Nannolithax, Odobenocetopsidae, Oedolithax, Palaeophocaena, Phocoenidae, Platylithax, Protodelphinus, Sinanodelphis
Subtaxa: Bohaskia, Delphinapterinae, Delphinapterus, Monodon, Monodontinae
Ecology: aquatic piscivore