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Pinnipedimorpha

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Pinnipedimorphs Temporal range: Oligocene–Holocene, 24–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Artist reconstruction of Enaliarctos emlongi
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Carnivora
Clade:	Pan-Pinnipedia
Clade:	Pinnipedimorpha Berta et al., 1989
Subtaxa
†Enaliarctidae Mitchell & Tedford, 1973 Pinnipediformes Berta, 1994 †Pinnarctidion Barnes, 1979 †Pacificotaria Barnes, 1992 †Pteronarctos Barnes, 1989 Pinnipedia Illiger, 1811

Pinnipedimorpha is a cladeofarctoid carnivorans that is defined to include the last common ancestor of Phoca and Enaliarctos, and all descendants of that ancestor.^[1] Scientists still debate on which lineage of arctoid carnivorans are the closest relatives to the pinnipedimorphs, being more closely related to musteloids.^[2]^[3]^[4]^[5]^[6]

Below is an overall phylogeny of the taxa covered in the article followed after a composite tree in Berta et al. (2018)^[1] and a total-evidence (combined molecular-morphological) dataset in Paterson et al. (2020):^[7]

†Amphicynodontidae

†Semantoridae

Pinnipedimorpha

†Enaliarctidae

Pinnipediformes

†Pinnarctidion

	†Pacificotaria

	†Pteronarctos

Pinnipedia

Phocoidea

	Phocidae

	†Eotaria

	Otariidae

References[edit]

^ ^a ^b Berta, A.; Churchill, M. & Boessenecker, R.W. (2018). "The Origin and Evolutionary Biology of Pinnipeds: Seals, Sea Lions, and Walruses". Annual Review of Earth and Planetary Sciences. 46: 203–228. Bibcode:2018AREPS..46..203B. doi:10.1146/annurev-earth-082517-010009.

^ Lento, G. M.; Hickson, R. E.; Chambers, G. K.; Penny, D. (1995). "Use of spectral analysis to test hypotheses on the origin of pinnipeds". Molecular Biology and Evolution. 12 (1): 28–52. doi:10.1093/oxfordjournals.molbev.a040189. PMID 7877495.

^ Hunt, R. M. Jr.; Barnes, L. G. (1994). "Basicranial evidence for ursid affinity of the oldest pinnipeds" (PDF). Proceedings of the San Diego Society of Natural History. 29: 57–67.

^ Higdon, J. W.; Bininda-Emonds, O. R.; Beck, R. M.; Ferguson, S. H. (2007). "Phylogeny and divergence of the pinnipeds (Carnivora: Mammalia) assessed using a multigene dataset". BMC Evolutionary Biology. 7: 216. doi:10.1186/1471-2148-7-216. PMC 2245807. PMID 17996107.

^ Sato, J. J.; Wolsan, M.; Suzuki, H.; Hosoda, T.; Yamaguchi, Y.; Hiyama, K.; Kobayashi, M.; Minami, S. (2006). "Evidence from nuclear DNA sequences sheds light on the phylogenetic relationships of Pinnipedia: Single origin with affinity to Musteloidea". Zoological Science. 23 (2): 125–46. doi:10.2108/zsj.23.125. hdl:2115/13508. PMID 16603806. S2CID 25795496.