Placentalia

Mamalia berplasenta; Rentang waktu: Paleocene-Holocene 66–0 jtyl PreЄ Є O S D C P T J K Pg N Diperkirakan, awal Cretaceous
	Hewan berplasenta.
Klasifikasi ilmiah
Domain:	Eukaryota
Kerajaan:	Animalia
Filum:	Chordata
Kelas:	Mammalia
Klad:	Eutheria
Infrakelas:	Placentalia; Owen, 1837
Subgrup
	Afrotheria; Xenarthra; Boreoeutheria;

Placentalia adalah salah satu hewan yang masih ada pada golongan Mammalia; dua lainnya yaitu Monotremata dan Marsupial. Kelompok ini terkadang disalahnamakan karena marsupial juga memberi makan fetus mereka via plasenta,^[4]

Referensi

^ Springer, M. S.; Murphy, W. J.; Eizirik, E.; O'Brien, S. J. (2003). "Placental mammal diversification and the Cretaceous–Tertiary boundary". Proceedings of the National Academy of Sciences of the United States of America. 100 (3): 1056–1061. doi:10.1073/pnas.0334222100. PMC 298725  . PMID 12552136.
^ Nishihara, H.; Maruyama, S.; Okada, N. (2009). "Retroposon analysis and recent geological data suggest near-simultaneous divergence of the three superorders of mammals". Proceedings of the National Academy of Sciences of the United States of America. 106 (13): 5235–5240. doi:10.1073/pnas.0809297106. PMC 2655268  . PMID 19286970.
^ dos Reis, M.; Inoue, J.; Hasegawa, M.; Asher, R.J.; Donoghue, P.C.J.; Yang, Z. (2012). "Phylogenomic datasets provide both precision and accuracy in estimating the timescale of placental mammal phylogeny". Proceedings of the Royal Society B. 279 (1742): 3491–3500. doi:10.1098/rspb.2012.0683. PMC 3396900  . PMID 22628470.
^ Renfree, M.B. (March 2010). "Review: Marsupials: placental mammals with a difference". Placenta. 31 Supplement: S21–6. doi:10.1016/j.placenta.2009.12.023. PMID 20079531.

[1] Springer, M. S.; Murphy, W. J.; Eizirik, E.; O'Brien, S. J. (2003). "Placental mammal diversification and the Cretaceous–Tertiary boundary". Proceedings of the National Academy of Sciences of the United States of America. 100 (3): 1056–1061. doi:10.1073/pnas.0334222100. PMC 298725  . PMID 12552136.

[2] Nishihara, H.; Maruyama, S.; Okada, N. (2009). "Retroposon analysis and recent geological data suggest near-simultaneous divergence of the three superorders of mammals". Proceedings of the National Academy of Sciences of the United States of America. 106 (13): 5235–5240. doi:10.1073/pnas.0809297106. PMC 2655268  . PMID 19286970.

[Reis,_M._2012-3] s Reis, M.; Inoue, J.; Hasegawa, M.; Asher, R.J.; Donoghue, P.C.J.; Yang, Z. (2012). "Phylogenomic datasets provide both precision and accuracy in estimating the timescale of placental mammal phylogeny". Proceedings of the Royal Society B. 279 (1742): 3491–3500. doi:10.1098/rspb.2012.0683. PMC 3396900  . PMID 22628470.

[Renfree2010-4] Renfree, M.B. (March 2010). "Review: Marsupials: placental mammals with a difference". Placenta. 31 Supplement: S21–6. doi:10.1016/j.placenta.2009.12.023. PMID 20079531.

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