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Kentriodontidae; Temporal range: Oligocene to Pliocene PreꞒ Ꞓ O S D C P T J K Pg N
	Rudicetus squalodontoides skull
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Artiodactyla
Infraorder:	Cetacea
Clade:	Delphinida
Superfamily:	Delphinoidea
Family:	†Kentriodontidae; Slijper, 1936
Genera
	See text

Kentriodontidae is an extinct family of odontocete whales related to modern dolphins. The Kentriodontidae lived from the Oligocene to the Pliocene before going extinct.^[1]

Taxonomy

Kentriodontids have been variously divided into three or four subfamilies: Kampholophinae, Kentriodontinae, Lophocetinae, and Pithanodelphinae.^[1] However, some cladistic studies have recovered Kentriodontidae as paraphyletic^[2]^[3]^[4]^[5]^[6] while others have recovered the family as monophyletic.^[7]^[8]

For instance, Miminiacetus may be a close relative of Lipotidae, Brevirostrodelpis is basal to other delphinidans,^[6] Incacetus is probably a member of Inioidea,^[5] and Atocetus and Lophocetus have been recovered as a pontoporiid and ziphiid sister taxon respectively, while Hadrodelphis, Kampholophos, Macrokentriodon, and Miminiacetus are recovered in a clade phylogenetically intermediate between Kentriodon and derived delphinidans ((Inioidea+Lipotidae)+Delphinoidea).^[9] Peredo et al. (2018) restrict Kentriodon to Kampholophos, Kentriodon, Rudicetus, and Wimahl, and remove Pithanodelphininae and its putative constituent genera (Leptodelphis, Pithanodelphis, Sarmatodelphis, Sophianacetus, and Tagicetus) as well as Microphocaena from Kentriodontidae.^[10]

Genera

Notes

^ ^a ^b "PBDB".
^ Geisler JH McGowen MR Yang G Gatesy J . 2011. A supermatrix analysis of genomic, morphological, and paleontological data for crown Cetacea. BMC Evolutionary Biology 11: 112.
^ Murakami M Shimada C Hikida Y Hirano H . 2012. Two new extinct basal phocoenids (Cetacea, Odontoceti, Delphinoidea), from the upper Miocene Koetoi Formation of Japan and their phylogenetic significance. Journal of Vertebrate Paleontology 32: 1172–1185.
^ Murakami M Shimada C Hikida Y Soeda Y Hirano H . 2014. Eodelphis kabatensis, a new name for the oldest true dolphin Stenella kabatensis Horikawa, 1977 (Cetacea, Odontoceti, Delphinidae), from the upper Miocene of Japan, and the phylogeny and paleobiogeography of Delphinoidea. Journal of Vertebrate Paleontology 34: 491–511.
^ ^a ^b Pyenson ND Vélez-Juarbe J Gutstein CS Little H Vigil D O’Dea A . 2015. Isthminia panamensis, a new fossil inioid (Mammalia, Cetacea) from the Chagres Formation of Panama and the evolution of ‘river dolphins’ in the Americas. PeerJ 3: e1227.
^ ^a ^b O. Lambert, G. Bianucci, M. Urbina and J. H. Geisler. 2017. A new inioid (Cetacea, Odontoceti, Delphinida) from the Miocene of Peru and the origin of modern dolphin and porpoise families. Zoological Journal of the Linnean Society 179:919-946.
^ Lambert, O.; Auclair, C.; et al. (September 2018). "A close relative of the Amazon river dolphin in marine deposits: a new Iniidae from the late Miocene of Angola". PeerJ. 6: e5556. doi:10.7717/peerj.5556. PMC 6139015. PMID 30225172.
^ ^a ^b ^c Guo, Z.; Kohno, N. (February 2023). "An Early Miocene kentriodontoid (Cetacea: Odontoceti) from the western North Pacific, and its implications for their phylogeny and paleobiogeography". PLOS ONE. 18 (2): e0280218. Bibcode:2023PLoSO..1880218G. doi:10.1371/journal.pone.0280218. PMC 9931143. PMID 36791148.
^ Post K, Louwye S, Lambert O. (2017) Scaldiporia vandokkumi, a new pontoporiid (Mammalia, Cetacea, Odontoceti) from the Late Miocene to earliest Pliocene of the Westerschelde estuary (The Netherlands) PeerJ 5:e3991 https://doi.org/10.7717/peerj.3991
^ Carlos Mauricio Peredo, Mark D. Uhen & Margot D. Nelson (2018): A new kentriodontid (Cetacea: Odontoceti) from the early Miocene Astoria Formation and a revision of the stem delphinidan family Kentriodontidae, Journal of Vertebrate Paleontology, DOI: 10.1080/02724634.2017.1411357

References

Ichishima, H., Barnes, L. G., Fordyce, R. E., Kimura, M. and Bohaska, D. J. (1994), A review of kentriodontine dolphins (Cetacea; Deiphinoidea; Kentriodontidae): Systematics and biogeography. Island Arc, 3: 486–492. doi:10.1111/j.1440-1738.1994.tb00127.x
Kazár, E. 2005: A new kentriodontid (Cetacea: Delphinoidea) from the Middle Miocene of Hungary. Mitteilungen aus dem Museum fuer Naturkunde in Berlin Geowissenschaftliche Reihe, 8: 53–73. doi:10.1002/mmng.200410004
Kazár, E. 2006: Sophianaecetus, a replacement name for Mediocris (Cetacea: Delphinoidea: Kentriodontidae). Fossil record, 9: 260. doi:10.1002/mmng.200600013
Uhen, M.D. 2006: The generic name Mediocris (Cetacea: Delphinoidea: Kentriodontidae), belongs to a foraminiferan. Fossil record, 9: 259. doi:10.1002/mmng.200600012