Aetiocetus cotylalveus, an early baleen whale from the Late Oligocene of Oregon, pencil drawing, digital coloring
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
Artiodactyla
Infraorder:
Cetacea
Superfamily:
†Aetiocetoidea
Family:
†Aetiocetidae Emlong, 1966[1]
Genera[2]
Aetiocetus
Ashorocetus
Chonecetus
Fucaia
Morawanocetus
Salishicetus
Aetiocetidae is an extinct family of toothed baleen whales known from the Oligocene.[3][2] The whales are from the North Pacific Ocean and ranged in size from 3 to 8 metres (10 to 26 ft) long. Many of the described specimens were discovered from the Upper Oligocene of the Japanese Morawan Formation, the largest known one from the Morawan's Upper tuffaceous siltstone. Other formally described extinct toothed mysticetis from this time are smaller, from 3 to 4 metres (10 to 13 ft) in length. Mysticeti with true baleen are seen in fossils from the Upper Oligocene. The monophyly of the family is still uncertain, as are the evolutionary relationship between the early toothed baleen whales (Aetiocetidae, Mammalodontidae, and Llanocetidae) and the early and extant edentulous baleen whales.[4] However, the cladistic analyses of Coronodon and Mystacodon seem to indicate that Aetiocetidae and Llanocetidae are more closely related to crown Mysticeti than to Mammalodontidae, Coronodon, and Mystacodon.[5][6]
^Marx, Felix G.; Tsai, Cheng-Hsiu; Fordyce, R. Ewan (2 December 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. PMC 4807455. PMID 27019734.
^ abTsai, Cheng-Hsiu; Ando, Tatsuro (14 April 2015). "Niche Partitioning in Oligocene Toothed Mysticetes (Mysticeti: Aetiocetidae)". Journal of Mammalian Evolution. 23: 33–41. doi:10.1007/s10914-015-9292-y.
^Prothero, Donald R.; Berggren, William A., eds. (2014). "18 Cetacean Evolution and Eocene/Oligocene Environments". Eocene-Oligocene Climatic and Biotic Evolution. Princeton University Press. p. 371. ISBN 9780691604954.
^Marx, Felix G. (25 September 2010). "The More the Merrier? A Large Cladistic Analysis of Mysticetes, and Comments on the Transition from Teeth to Baleen". Journal of Mammalian Evolution. 18 (2): 77–100. doi:10.1007/s10914-010-9148-4.
^Lambert, Olivier; Martínez-Cáceres, Manuel; Bianucci, Giovanni; Di Celma, Claudio; Salas-Gismondi, Rodolfo; Steurbaut, Etienne; Urbina, Mario; de Muizon, Christian (2017). "Earliest Mysticete from the Late Eocene of Peru Sheds New Light on the Origin of Baleen Whales". Current Biology. 27: 1535–1541.e2. doi:10.1016/j.cub.2017.04.026. hdl:11581/396095. PMID 28502655.
^Geisler, Jonathan H; Boessenecker, Robert W; Brown, Mace; Beatty, Brian L (2017). "The Origin of Filter Feeding in Whales". Current Biology. 27 (13): 2036–2042. doi:10.1016/j.cub.2017.06.003. PMID 28669761.
Aetiocetidae is an extinct family of toothed baleen whales known from the Oligocene. The whales are from the North Pacific Ocean and ranged in size from...
is fossil rich and contains source units where toothed baleen whales (Aetiocetidae) and Desmostylians have been discovered. The Morawan Formation is a very...
Ewan (2015). "A new Early Oligocene toothed 'baleen' whale (Mysticeti: Aetiocetidae) from western North America: one of the oldest and the smallest". Royal...
study and their results support a monophyletic Aetiocetidae (Aetiocetus + Chonecetus). Here, the Aetiocetidae is the sister taxon to Eomysticetus+ Micromysticetus...
Morawanocetus is a genus of extinct primitive baleen whale from the family Aetiocetidae that existed during the Chattian stage of the Oligocene epoch. Its fossils...
Family †Squalodontidae Family †Rhabdosteidae Parvorder Mysticeti Family †Aetiocetidae Family †Mammalodontidae Family †Cetotheriidae Family Balaenopteridae:...
Creek Formation United States ( Washington) A member of the family Aetiocetidae. Incakujira fordycei Sp. nov Valid Kimura & Hasegawa Miocene Pisco Formation...
is an extinct genus of primitive baleen whale belonging to the family Aetiocetidae that is known from Oligocene marine deposits found in Vancouver Island...
toothed baleen whales of the Southern Hemisphere, a sister clade to Aetiocetidae and more modern baleen-bearing baleen whales. The name Mammalodon is...
a monotypic genus of an extinct primitive baleen whale of the family Aetiocetidae. It was named by Barnes et al. 1995, and contains one species, A. eguchii...
taxon ChM PV 5720 and more primitive than "Metasqualodon" symmetricus, Aetiocetidae, Mammalodontidae and Llanocetus. Coronodon is very unusual among archaic...
Chonecetus is an extinct genus of primitive baleen whale of the family Aetiocetidae that lived in the Oligocene period. Its fossils have been found in Canada...
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