Asioryctitheria
Template:Short description Template:Automatic taxobox
Asioryctitheria ("Asian digging beasts") is an extinct order of early eutherians.
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.[1][2]
- Sasayamamylos kawaii Kusuhashi et al. 2013[3]
- Kennalestidae Kielan-Jaworowska 1981
- Kennalestes gobiensis Kielan-Jaworowska 1981
- Asioryctidae Szalay 1977
- Asioryctes nemegetensis Kielan-Jaworowska 1975
- Ukhaatherium nesovi Novacek et al. 1997
References
<templatestyles src="Reflist/styles.css" />
Script error: No such module "Check for unknown parameters".
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.
External links
- MESOZOIC MAMMALS; Basal Eutheria Two, an internet directory
- A eutherian mammal from the Early Cretaceous of Russia at Ingenta