Arctoidea

Arctoidea
Temporal range: Eocene–Holocene, 46–0 Ma
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Suborder: Caniformia
Clade: Canoidea
Infraorder: Arctoidea
Flower, 1869
Subclades

Arctoidea is an infraorder of mostly carnivorous mammals which include the extinct Hemicyonidae (dog-bears), and the extant Musteloidea (weasels, raccoons, skunks, red pandas), Pinnipedia (seals, sea lions), and Ursidae (bears), found in all continents from the Eocene, 46 million years ago, to the present. The oldest group of the clade is the bears, as their CMAH gene is still intact. The gene became non-functional in the common ancestor of the Mustelida (the musteloids and pinnipeds). Arctoids are caniforms, along with dogs (canids) and extinct bear dogs (Amphicyonidae). The earliest caniforms were superficially similar to martens, which are tree-dwelling mustelids. Together with feliforms, caniforms compose the order Carnivora; sometimes Arctoidea can be considered a separate suborder from Caniformia and a sister taxon to Feliformia.

Phylogeny

The cladogram is based on molecular phylogeny of six genes in Flynn (2005), with the musteloids updated following the multigene analysis of Law et al. (2018).

Caniformia

References

  1. ↑ de Queiroz, K.; Cantino, P. D.; Gauthier, J. A. (2020). Phylonyms: A Companion to the PhyloCode. CRC Press. ISBN 978-0429821219.
  2. ↑ "Paleobiology Database: Arctoidea Basic info"[permanent dead link].
  3. ↑ Ng, Preston S.K.; Böhm, Raphael; Hartley-Tassell, Lauren E.; Steen, Jason A.; Wang, Hui; Lukowski, Samuel W.; Hawthorne, Paula L.; Trezise, Ann E.O.; Coloe, Peter J.; Grimmond, Sean M.; Haselhorst, Thomas; von Itzstein, Mark; Paton, Adrienne W.; Paton, James C.; Jennings, Michael P. (2014). "Ferrets exclusively synthesize Neu5Ac and express naturally humanized influenza a virus receptors". Nature Communications. 5: 5750. doi:10.1038/ncomms6750. PMC 4351649. PMID 25517696.
  4. ↑ Flynn, J. J.; Finarelli, J. A.; Zehr, S.; Hsu, J.; Nedbal, M. A. (2005). "Molecular phylogeny of the Carnivora (Mammalia): Assessing the impact of increased sampling on resolving enigmatic relationships". Systematic Biology. 54 (2): 317–37. doi:10.1080/10635150590923326. PMID 16012099.
  5. ↑ Law, Chris J.; Slater, Graham J.; Mehta, Rita S. (2018-01-01). "Lineage Diversity and Size Disparity in Musteloidea: Testing Patterns of Adaptive Radiation Using Molecular and Fossil-Based Methods". Systematic Biology. 67 (1): 127–144. doi:10.1093/sysbio/syx047. ISSN 1063-5157. PMID 28472434.