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Extinct family of mammals
Xenorophidae is an extinct family of dolphin-like odontocetes (toothed whales) that lived in the Southeastern United States during the Oligocene. They
Xenorophidae
Species of mammal
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Pygmy_killer_whale
Medium-sized toothed whale species
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Narwhal
Species of mammal
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Common_dolphin
The list of extinct cetaceans features the extinct genera and species of the order Cetacea. The cetaceans (whales, dolphins and porpoises) are descendants
List_of_extinct_cetaceans
Extinct genus of toothed whale
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Arimidelphis
Extinct genus of freshwater dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Eolipotes
Extinct genus of sperm whale from the Miocene epoch
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Livyatan
Genus of porpoises
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Finless_porpoise
Superfamily of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Delphinoidea
Family of marine mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Oceanic_dolphin
Extinct dolphin genus
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Fordycetus
Species of whale
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Cuvier's_beaked_whale
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Microberardius
Extinct genus of mammals
Oligocene (Chattian) marine deposits in South Carolina. It belongs to the Xenorophidae. Echovenator is distinguishable from other xenorophids in having a paranaris
Echovenator
Extinct species of whale
this family, but are now recognized as belonging to distinct families (Xenorophidae). M. Tuomey. 1848. Report on the Geology of South Carolina 1-293. J.
Agorophius
Species of porpoise endemic to the North Pacific
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Dall's_porpoise
Geologic formation in North Carolina, United States
(2017-11-08). "New records of the dolphin Albertocetus meffordorum (Odontoceti: Xenorophidae) from the lower Oligocene of South Carolina: Encephalization, sensory
Belgrade_Formation
Genus of dolphins in the order Cetacea
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Pilot_whale
Extinct genus of river dolphin
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Squalodelphis
Geologic formation in South Carolina, U.S.
(2017-11-08). "New records of the dolphin Albertocetus meffordorum (Odontoceti: Xenorophidae) from the lower Oligocene of South Carolina: Encephalization, sensory
Ashley_Formation
Genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Bottlenose_whale
Small cetacean of the family Phocoenidae
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Porpoise
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Haborodelphis
Species of whale
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Beluga_whale
Family of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Beaked_whale
Species of mammal
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Shepherd's_beaked_whale
Extinct genus of odontocete cetaceans
of the Chandler Bridge Formation of South Carolina. It belongs to the Xenorophidae. Cotylocara was capable of echolocation like modern dolphins, as evidenced
Cotylocara
Parvorder of cetaceans
Cetacea Parvorder: Odontoceti Flower, 1867 Subgroups †Ashleycetidae †Xenorophidae Amblyoccipita †Simocetidae Stegoceti †Agorophiidae †Waipatiidae †Squalodontidae
Toothed_whale
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Tusciziphius
Extinct genus of sperm whale from the Pliocene epoch
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Eophyseter
Extinct genus of dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Prepomatodelphis
Family of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Monodontidae
Genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Aethalodelphis
Extinct genus of dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Macrokentriodon
Species of mammal
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Melon-headed_whale
Superfamily of toothed whales
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Physeteroidea
Genus of freshwater dolphin
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
South_Asian_river_dolphin
Genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Humpback_dolphin
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Squalodon
Extinct genus of sperm whales
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Acrophyseter
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Huaridelphis
Extinct genus of mammals
(Rupelian) marine deposits in North Carolina, and belonging to the family Xenorophidae. Albertocetus is a relatively small whale, measuring 1.82 metres (6.0 ft)
Albertocetus
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Pliopontos
Extinct family of dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Albireonidae
Clade of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Delphinida
Genus of beaked whales
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Mesoplodon
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Beneziphius
Species of mammal
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Fraser's_dolphin
Extinct genus of toothed whale (fossil)
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Brygmophyseter
Extinct genus of freshwater dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Pebanista
Species of mammal
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Atlantic_white-sided_dolphin
Species of river dolphin
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Baiji
Extinct genus of sperm whales
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Zygophyseter
Genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Lagenorhynchus
Genus of waipatiid cetacean from the Late Paleogene
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Nihoroa
Genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Right_whale_dolphin
Family of dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Iniidae
Species of mammal
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Rough-toothed_dolphin
Extinct genus of mammals
(Rupelian) marine deposits in South Carolina. It belongs to the family Xenorophidae. Inermorostrum is largely distinguished from other xenorophiids in having
Inermorostrum
Genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Physeter
Extinct genus of whales
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Pterocetus
Family of dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Platanistidae
Prehistoric cetacean genus
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Nihohae
Extinct genus of toothed whales from the Oligocene epoch
Ashleycetus planicapitus Archaeodelphis patrius Mirocetus riabinini Xenorophidae Patriocetus kazakhstanicus ChM PV 2761 ChM PV 5852 Agorophius pygmaeus
Ankylorhiza
Genus of dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Inia
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Kentriodon
Genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Kogia
Extinct family of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Waipatiidae
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Bohaskaia
Extinct genus of cetaceans
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Hemisyntrachelus
Extinct genus of whales
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Idiophyseter
Extinct species of whale
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Blunt-snouted_dolphin
Genus of dolphin
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Bottlenose_dolphin
Extinct genus of toothed whale from the Miocene
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Amphidelphis
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Orycterocetus
Geologic formation in Virginia, U.S.
Otodus angustidens Hemipristis serra Alopias vulpinus Squatina prima? Xenorophidae sp. Micromysticetus sp. cf. Ankylorhiza sp. cf. Xenorophus sloani aff
Old_Church_Formation
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Globicetus
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Australodelphis
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Scaphokogia
Extinct family of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Squalodontidae
Extinct genus of beaked whale
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Izikoziphius
Genus of marine mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Pseudorca
Extinct genus of cetaceans
(Chattian) marine deposits in South Carolina, and belonging to the family Xenorophidae. Archaeodelphis has polydont teeth, like other xenorophids. M. D. Uhen
Archaeodelphis
Extinct genus of dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Romaleodelphis
Species of mammal
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
La_Plata_dolphin
Extinct species of whale related to belugas
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Denebola_brachycephala
Genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Stenella
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Simocetus
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Physeterula
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Hoplocetus
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Olympicetus
Extinct genus of dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Liolithax
Extinct family of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Squalodelphinidae
Extinct genus of cetaceans
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Wimahl
Extinct family of dolphin relatives
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Kentriodontidae
Extinct genus of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Idiorophus
Extinct family of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Allodelphinidae
Family of mammals
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Kogiidae
Family of river dolphins
†Romaleodelphis †Sachalinocetus †Simocetus †Sulakocetus †Tangaroasaurus †Xenorophidae Albertocetus Cotylocara Echovenator Inermorostrum Xenorophus †Waipatiidae
Lipotidae
XENOROPHIDAE
XENOROPHIDAE
XENOROPHIDAE
XENOROPHIDAE
XENOROPHIDAE
XENOROPHIDAE
XENOROPHIDAE
XENOROPHIDAE
XENOROPHIDAE