Asioryctitheria

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Asioryctitheria
Temporal range: Early-Late Cretaceous
Asioryctes nemegtensis.jpg
Asioryctes nemegtensis skull
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Subclass: Theria
Infraclass: Eutheria
Order: Asioryctitheria
Novacek et al., 1997
Families & Genera

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

Skull structure[edit]

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.

Further reading[edit]

  • 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.

External links[edit]