magnorder of placental mammals

Boreoeutheria (also Boreotheria) are mammals that are the third superorder of placental mammals.[1] The other two groups are Afrotheria and Xenarthra.


Temporal range: Paleocene–Recent
Euarchontoglires and Laurasiatheria
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Clade: Eutheria
Infraclass: Placentalia
Magnorder: Boreoeutheria
Springer & de Jong, 2001;[3] Murphy et al., 2001[4]
  • Boreoplacentalia (Arnason, 2008)[5]
  • Boreotheria (Waddell, 2001)

They evolved on the northern supercontinent Laurasia after it split from Gondwana when Pangaea broke up.

Lentivirus, or Retrovirus can affect these mammals, as well as humans which are part of this magnorder.


  1. "Boreoeutheria - an overview | ScienceDirect Topics". Retrieved 2022-10-26.
  2. Bristol, University of. "February: Rooting the family tree of placental mammals | News and features | University of Bristol". Retrieved 2024-06-10.
  3. Springer MS, de Jong WW (2001). "Which mammalian supertree to bark up?". Science. 291 (5509): 1709–1711. doi:10.1126/science.1059434. PMID 11253193. S2CID 82844572.
  4. Murphy WJ, Eizirik E, O'Brien SJ, Madsen O, Scally M, Douady CJ, et al. (December 2001). "Resolution of the early placental mammal radiation using Bayesian phylogenetics". Science. 294 (5550): 2348–2351. Bibcode:2001Sci...294.2348M. doi:10.1126/science.1067179. PMID 11743200. S2CID 34367609.
  5. Arnason U., Adegoke J. A., Gullberg A., Harley E. H., Janke A., Kullberg M. (2008.) "Mitogenomic relationships of placental mammals and molecular estimates of their divergences." Gene.; 421(1-2):37–51