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Asioryctitheria

asioryctitheria
Asioryctitheria "asian digging beasts" is an extinct order of early eutherians

Contents

  • 1 Skull structure
  • 2 Classification
  • 3 References
  • 4 Further reading
  • 5 External links

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
  • Kennalestidae Kielan-Jaworowska 1981
    • Kennalestes gobiensis Kielan-Jaworowska 1981
  • Asioryctidae Szalay 1977
    • Asioryctes nemegetensis Kielan-Jaworowska 1975
    • Ukhaatherium nesovi Novacek et al 1997

References

  1. ^ Mikko's Phylogeny Archive Haaramo, Mikko 2007 "Basal Eutheria – placental mammals and relatives" Retrieved 30 December 2015 
  2. ^ Paleofilecom net, info "Archived copy" 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

External links

  • MESOZOIC MAMMALS; Basal Eutheria Two, an internet directory
  • A eutherian mammal from the Early Cretaceous of Russia at Ingenta


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Asioryctitheria


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    Asioryctitheria beatiful post thanks!

    29.10.2014


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