Delphinoidea is the largest group of

toothed whale The toothed whales (also called odontocetes, systematic name Odontoceti) are a parvorder of cetaceans that includes dolphins, porpoises, and all other whales possessing teeth, such as the beaked whales and sperm whales. Seventy-three species ...

s with 66 genera in 6 families. The largest living member of the superfamily is the

killer whale The orca or killer whale (''Orcinus orca'') is a toothed whale belonging to the oceanic dolphin family, of which it is the largest member. It is the only extant species in the genus '' Orcinus'' and is recognizable by its black-and-white ...

, which can reach 6 tons, while the smallest is the vaquita.

Taxonomy

Based on McGowen ''et al''., 2019 Superfamily Delphinoidea :Family † Albireonidae :::Genus '' Albireo'' :Family

Delphinidae Oceanic dolphins or Delphinidae are a widely distributed family of dolphins that live in the sea. Close to forty extant species are recognised. They include several big species whose common names contain "whale" rather than "dolphin", such as th ...

:: Subfamily

Delphininae Oceanic dolphins or Delphinidae are a widely distributed family of dolphins that live in the sea. Close to forty extant species are recognised. They include several big species whose common names contain "whale" rather than "dolphin", such as the ...

::: Genus ''

Delphinus Delphinus (Pronounced or ) is a small constellation in the Northern Celestial Hemisphere, close to the celestial equator. Its name is the Latin version for the Greek word for dolphin (). It is one of the 48 constellations listed by the 2nd ce ...

'' ::: Genus '' Lagenodelphis'' ::: Genus '' Sotalia'' :::Genus '' Sousa'' ::: Genus ''

Stenella ''Stenella'' is a genus of marine mammals in Delphinidae, the family informally known as the oceanic dolphins. Species Currently, five species are recognised in this genus: The common name for species in this genus is the "spotted dolphins" o ...

'' ::: Genus ''

Tursiops Bottlenose dolphins are aquatic mammals in the genus ''Tursiops.'' They are common, cosmopolitan members of the family Delphinidae, the family of oceanic dolphins. Molecular studies show the genus definitively contains two species: the common ...

'' :: Subfamily Globicephalinae ::: Genus †'' Astadelphis'' ::: Genus '' Feresa'' ::: Genus '' Globicephala'' ::: Genus '' Grampus'' ::: Genus '' Orcaella'' ::: Genus '' Peponocephala'' ::: Genus '' Pseudorca'' ::: Genus '' Steno'' ::Subfamily Lissodelphininae ::: Genus '' Cephalorhynchus'' ::: Genus '' Lissodelphis'' :: Subfamily Orcininae ::: Genus †'' Arimidelphis'' ::: Genus †'' Eodelphinus'' ::: Genus †'' Hemisyntrachelus'' ::: Genus '' Orcinus'' :: Subfamily incertae sedis ::: Genus †''

Australodelphis ''Australodelphis mirus'' is an extinct Pliocene Delphinidae, dolphin. ''A. mirus'' is known from fossils found in the Sørsdal Formation, Mule Peninsula, Vestfold Hills, East Antarctica. The genus has been described as an example of convergent ...

'' ::: Genus †''

Etruridelphis ''Etruridelphis'' is an extinct genus of cetacean Cetacea (; , ) is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large s ...

'' :::Genus '' Lagenorhynchus'' ::: Genus †'' Sinanodelphis'' :Family † Kentriodontidae :: Subfamily Kentriodontinae ::: Genus '' Belonodelphis'' ::: Genus '' Delphinodon'' ::: Genus '' Heterodelphis'' ::: Genus '' Incacetus''? ::: Genus '' Kentriodon'' ::: Genus '' Lamprolithax'' ::: Genus '' Loxolithax'' ::: Genus '' Macrokentriodon'' ::: Genus '' Microphocaena'' ::: Genus '' Rudicetus'' ::: Genus ''

Tagicetus ''Tagicetus'' is an extinct genus of dolphin belonging to the polyphyletic family Kentriodontidae. Although classified in the subfamily Kentriodontinae by Lambert et al. (2005), recent cladistic analysis places it as closer to extant delphinoids ...

'' :: Subfamily Lophocetinae ::: Genus '' Hadrodelphis'' ::: Genus ''

Liolithax ''Liolithax'' is an extinct genus of dolphin from the Middle Miocene (Serravallian) Temblor Formation of California. Taxonomy ''Liolithax kernensis'', described by Remington Kellogg Arthur Remington Kellogg (5 October 1892 – 8 May 1969) w ...

'' ::: Genus '' Lophocetus'' :: Subfamily Pithanodelphininae? ::: Genus ''

Atocetus ''Atocetus'' is an extinct genus of pontoporiid dolphin found in Miocene-age marine deposits in Peru and California. Description The type species, ''Atocetus iquensis'', is known from Serravallian-age strata of the Pisco Formation of ...

''? ::: Genus '' Leptodelphis''? ::: Genus '' Pithanodelphis''? ::: Genus '' Sarmatodelphis''? ::: Genus '' Sophianacetus''? :: Subfamily Kampholophinae? ::: Genus '' Kampholophos''? :Family Monodontidae :: Subfamily Delphinapterinae ::: Genus †'' Bohaskaia'' ::: Genus '' Delphinapterus'' ::: Genus † '' Denebola'' :: Subfamily Monodontinae ::: Genus '' Monodon'' :Family † Odobenocetopsidae :: Genus '' Odobenocetops'' :Family

Phocoenidae Porpoises are a group of fully aquatic marine mammals, all of which are classified under the family Phocoenidae, parvorder Odontoceti (toothed whales). Although similar in appearance to dolphins, they are more closely related to narwhals ...

:: Genus †''

Archaeophocaena ''Archaeophocaena teshioensis'' is a species of extinct porpoise from the Late Miocene Koetoi Formation of Japan living around 6.4–5.5 mya (unit), million years ago (mya). The holotype specimen comprises a partial skull. The animal, along with ...

'' :: Genus †'' Australithax'' :: Genus †'' Brabocetus'' :: Genus †'' Haborophocoena'' :: Genus †'' Lomacetus'' :: Genus †''

Miophocaena ''Miophocaena nishinoi'' is an extinct species of porpoise from the Late Miocene Koetoi Formation of Japan, dating to around 6.4–5.5 million years ago (mya), represented by a partial skull. the genus name derives from Ancient Greek ...

'' :: Genus '' Neophocaena'' :: Genus †'' Numataphocoena'' :: Genus '' Phocoena'' :: Genus ''

Phocoenoides Dall's porpoise (''Phocoenoides dalli'') is a species of porpoise endemic to the North Pacific. It is the largest of porpoises and the only member of the genus ''Phocoenoides''. The species is named after American naturalist W. H. Dall. Taxon ...

'' :: Genus †'' Piscolithax'' :: Genus †''

Pterophocaena ''Pterophocaena nishinoi'' is an extinct species of porpoise discovered in the Late Miocene Wakkanai Formation of Japan dating to 9.3–9.2 million years ago (mya), and may represent an intermediate phase between porpoises and dolphins. It is o ...

'' :: Genus †'' Salumiphocaena'' :: Genus †''

Semirostrum ''Semirostrum ceruttii'' is an extinct porpoise that lived between 5 and 1.5 million years ago (Ma), during the Pliocene epoch. The species is highly distinctive due to the extremely long symphysis on the lower jaw, reaching lengths of 85&nb ...

'' :: Genus †'' Septemtriocetus'' :Familia incertae sedis :: Genus †'' Graamocetus'' :: Genus †'' Miodelphis'' :: Genus †'' Nannolithax'' :: Genus †'' Oedolithax'' :: Genus †'' Palaeophocaena'' :: Genus †'' Platylithax'' :: Genus †'' Protodelphinus''

References

Toothed whales Extant Oligocene first appearances {{whale-stub