Full reference: E. D. Mitchell. 1989. A new cetacean from the late Eocene La Meseta Formation, Seymour Island, Antarctic Peninsula. Canadian Journal of Fisheries and Aquatic Sciences 46(12):2219-2235
Parent taxon: Mysticeti according to P. D. Gingerich 2005
See also McKenna and Bell 1997, Mitchell 1989 and Sanders and Barnes 2002
Sister taxa: Aetiocetidae, Aetiocetoidea, Amphitera, Aulocetus calaritanus, Aulocetus lovisati, Balaena cortesii, Balaena simpsoni, Borealodon, Burtinopsis, Cetotheriomorphus, Chaeomysticeti, Coronodonidae, Crenaticeti, Eschrichtius expansus, Eschrichtius leptocentrus, Eschrichtius pusillus, Horopeta, Kinetomenta, Llanocetidae, Maiabalaena, Mammalodontidae, Mauicetus brevicollis, Mesoteras, Mesoteras kerrianus, Metasqualodon, Mioceta, Mystacodontidae, Plesiocetus, Probalaena, Pterobalaenidae, Rhegnopsis, Siphonocetus, Squalodon serratus, Toipahautea, Tretulias, Tretulias buccatus, Ulias
Subtaxa: none
Ecology: aquatic carnivore-suspension feeder
Distribution: there are no occurrences of Eschrichtioidea in the database