Asioryctitheria Temporal range: Early-Late Cretaceous |
|
---|---|
Asioryctes nemegtensis skull | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Subclass: | Theria |
Infraclass: | Eutheria |
Order: |
†Asioryctitheria Novacek et al., 1997 |
Genera | |
Asioryctitheria ("asian digging beasts") is an extinct order of early eutherians.
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.
Asioryctitheria contains at least four genera and two families.