The list of extinct cetaceans features the extinct genera and species of the order Cetacea. The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, the even-toed ungulates. The earliest cetaceans were still hoofed mammals. These early cetaceans became gradually better adapted for swimming than for walking on land, finally evolving into fully marine cetaceans.

This list currently includes only fossil genera and species. However, the Atlantic population of gray whales (Eschrichtius robustus) became extinct in the 18th century, and the baiji (or Chinese river dolphin, Lipotes vexillifer) was declared "functionally extinct" after an expedition in late 2006 failed to find any in the Yangtze River.

Contents

Suborder ArchaeocetiEdit

Suborder MysticetiEdit

Family AetiocetidaeEdit

(Oligocene)

 
Aetiocetus restoration

Family LlanocetidaeEdit

(Late Eocene-Early Oligocene)

Family MammalodontidaeEdit

(jr synonym Janjucetidae)

(Late Oligocene)

Family incertae sedisEdit

Clade ChaeomysticetiEdit

Family incertae sedisEdit

Superfamily EomysticetoideaEdit

Family CetotheriopsidaeEdit

(Oligocene to Miocene)

Family EomysticetidaeEdit

(Oligocene to early Miocene)

Family AglaocetidaeEdit

(Miocene)

Superfamily BalaenoideaEdit

Family BalaenidaeEdit

(Oligocene to Recent)

Family incertae sedisEdit

Clade ThalassotheriiEdit

Family CetotheriidaeEdit

(Miocene - Pliocene)

Classification follows Steeman (2007) unless otherwise noted.[8]

 
Cetotherium restoration
Family DiorocetidaeEdit

(Miocene to Pliocene)

Family NeobalaenidaeEdit

(Miocene to Recent)

Family PelocetidaeEdit

(Miocene)

Family incertae sedisEdit
Superfamily BalaenopteroideaEdit
Family BalaenopteridaeEdit

(Miocene to Recent)

Family EschrichtiidaeEdit

(Miocene to Recent)

Family TranatocetidaeEdit

Family incertae sedisEdit

Suborder OdontocetiEdit

Basal formsEdit

Family AgorophiidaeEdit

(Late Oligocene)

Family AshleycetidaeEdit

(Early Oligocene)

Family MirocetidaeEdit

(Early Oligocene)

Family PatriocetidaeEdit

(Oligocene to Early Miocene)

Family SimocetidaeEdit

(Late Oligocene)

Family XenorophidaeEdit

(Oligocene)

Family InticetidaeEdit

Family MicrozeuglodontidaeEdit

Family SqualoziphiidaeEdit

(Early Miocene)

Family incertae sedisEdit

Superfamily SqualodontoideaEdit

Family DalpiazinidaeEdit

(Late Oligocene to Miocene)

Family ProsqualodontidaeEdit

(Oligocene to Miocene)

Family SqualodontidaeEdit

(Oligocene to Pliocene)

Superfamily PhyseteroideaEdit

Family KogiidaeEdit

(Miocene to recent)

Family PhyseteridaeEdit

Family incertae sedisEdit

Superfamily "Eurhinodelphinoidea"Edit

Family ArgyrocetidaeEdit

(Late Oligocene to Early Miocene)

Family EoplatanistidaeEdit

(Miocene)

Family EurhinodelphinidaeEdit

(Mid Miocene to Pliocene)

Superfamily PlatanistoideaEdit

Family AllodelphinidaeEdit

(Early to Middle Miocene)

 
Life reconstruction of Arktocara yakataga

Family PlatanistidaeEdit

(Miocene to Recent)

Family SqualodelphinidaeEdit

(Early to Late Miocene)

Family WaipatiidaeEdit

Superfamily ZiphioideaEdit

Family ZiphiidaeEdit

(Miocene to Recent)

Clade DelphinidaEdit

Family KentriodontidaeEdit

(Early-Middle Miocene)

 
Kentriodon reconstruction

Family incertae sedisEdit

Superfamily DelphinoideaEdit

Family AlbireonidaeEdit

(Miocene to Pliocene)

Family DelphinidaeEdit
 
Etruridelphis giulii

(Oligocene to Recent)

Family MonodontidaeEdit

(Miocene to Pliocene)

Family OdobenocetopsidaeEdit

(Pliocene)

 
Odobenocetops reconstruction
Family PhocoenidaeEdit

(Miocene to Recent)

Superfamily InioideaEdit

Family IniidaeEdit
Family PontoporiidaeEdit

(Middle Miocene to Recent)

Superfamily LipotoideaEdit

Family LipotidaeEdit

(Miocene to Recent)

Superfamily incertae sedisEdit

Family incertae sedisEdit

See alsoEdit

ReferencesEdit

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  6. ^ Felix G. Marx, Cheng-Hsiu Tsai and R. Ewan Fordyce (2015). "A new Early Oligocene toothed ‘baleen’ whale (Mysticeti: Aetiocetidae) from western North America: one of the oldest and the smallest". Royal Society Open Science 2 (12): 150476. doi:10.1098/rsos.150476.
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  12. ^ Robert W. Boessenecker (2013). "A new marine vertebrate assemblage from the Late Neogene Purisima Formation in Central California, part II: Pinnipeds and Cetaceans". Geodiversitas. 35 (4): 815–940. doi:10.5252/g2013n4a5.CS1 maint: uses authors parameter (link)
  13. ^ Bisconti, M. and Bosselaers, M. (2016), Fragilicetus velponi: a new mysticete genus and species and its implications for the origin of Balaenopteridae (Mammalia, Cetacea, Mysticeti). Zoological Journal of the Linnean Society, 177: 450–474. doi: 10.1111/zoj.12370
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