Ivanantonia

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Ivanantonia
Temporal range: early Eocene
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: incertae sedis
Genus: Ivanantonia
Shevyreva, 1989
Species:
I. efremovi
Binomial name
Ivanantonia efremovi
Shevyreva, 1989

Ivanantonia is the only genus in the extinct rodent family Ivanantoniidae and is represented by a single species, Ivanantonia efremovi, from the early Eocene of Mongolia. Ivanantonia is poorly known, with only the lower dentition represented. The genus is unusual among early rodents in lacking all lower premolars and in showing evidence of propalinal chewing. [1] The relationships of Ivanantonia are unclear. It was described as a ctenodactyloid. Hartenberger et al. suggested a potential relationship to the muroid Nonomys but declined to assign Ivanantoniidae to a suborder within Rodentia. [1]

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References

  1. 1 2 Hartenberger, Jean-Louis; Dashzeveg, Demberelyin; Martin, Thomas (1 April 1997). "What isIvanantonia efremovi (Rodentia, Mammalia)?". Paläontologische Zeitschrift. 71 (1): 135–143. Bibcode:1997PalZ...71..135H. doi:10.1007/BF03022555.

Further reading