Asioryctitheria

Asioryctitheria

Asioryctitheria

Extinct order of early eutherians


Asioryctitheria ("Asian digging beasts") is an extinct order of early eutherians.

Quick Facts Scientific classification, Genera ...

Skull structure

With the exception of Prokennalestes, these advanced forms lacked a Meckelian groove. Furthermore, they were equipped with double-rooted canines, a lower premolar with a reduced or absent metaconid and a more elongated lower premolar than their predecessors. In addition, the entoconid and hypoconulid on the lower molars are untwinned, the entotympanic is non-existent, the alisphenoid is enlarged, a Vidian foramen is present as well as a promontorium linked to the paroccipital process via the crista interfenestralis.

Classification

Asioryctitheria contains at least four genera and two families.[2][3]


References

  1. "Asioryctitheria". paleobiodb.org. Retrieved 2021-08-11.
  2. Mikko's Phylogeny Archive Haaramo, Mikko (2007). "Basal Eutheria – placental mammals and relatives". Retrieved 30 December 2015.
  3. Paleofile.com (net, info) "Paleofile.com". Archived from the original on 2016-01-11. Retrieved 2015-12-30.. "Taxonomic lists- Mammals". Archived from the original on 11 January 2016. Retrieved 30 December 2015.

Further reading

  • Zofia Kielan-Jaworowska, Richard L. Cifelli, and Zhe-Xi Luo, Mammals from the Age of Dinosaurs: Origins, Evolution, and Structure (New York: Columbia University Press, 2004), 499–501.



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