Family Rhynchoceti Eschricht 1849 (whale)
Parent taxon: Cetacea according to T. H. Huxley 1864
Sister taxa: Ambulocetidae, Archaeoceti, Balaenodontae, Balaenoidorum, Kekenodontidae, Metasqualodon, Pagiodon, Pakicetidae, Pelagiceti, Phococetus, Proteroceta, Remingtonocetidae
Subtaxa: none
Ecology: aquatic carnivore