Osteichthyes - Pelagiceti - Basilosauridae
Synonyms: Alabamornis Abel 1906, Hydrarchos Koch 1845, Hydrarchus Muller 1849, Hydrargos Koch 1845, Polyptychodon Emmons 1858, Zeuglodon Owen 1839 [objective synonym], Zugodon Scudder 1882, Zyglodon Hammerschmidt 1848, Zygodon Owen 1839
Full reference: R. Harlan. 1834. Notice of fossil bones found in the Tertiary formation of the State of Louisiana. Transactions of the American Philosophical society 4:397-403
Parent taxon: Basilosauridae according to M. D. Uhen 2013
Sister taxa: Ancalecetus, Balaenoptera juddi, Basiloterus, Basilotritus, Berardiopsis miocaenus, Chrysocetus, Cynthiacetus, Dorudon, Dorudontinae, Masracetus, Ocucajea, Pontogeneus, Saghacetus, Stromeriinae, Stromerius, Supayacetus, Zygorhiza
Subtaxa: Basilosaurus cetoides, Basilosaurus drazindai, Basilosaurus isis, Hydrarchos harlani
Ecology: aquatic carnivore