''Paritatodon'' is an extinct mammal which existed in

Kyrgyzstan Kyrgyzstan,, pronounced or the Kyrgyz Republic, is a landlocked country in Central Asia. Kyrgyzstan is bordered by Kazakhstan to the north, Uzbekistan to the west, Tajikistan to the south, and the People's Republic of China to the ea ...

and England during the

Jurassic The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of ...

period. It was originally the

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of sever ...

specimen of ''

Shuotherium ''Shuotherium'' is a fossil mammal known from Middle-Late Jurassic of the Forest Marble Formation of England,Sigogneau−Russell, D. 1998. Discovery of a Late Jurassic Chinese mammal in the upper Bathonian of England. Comptes Rendus de l’Acad ...

kermacki'', but Martin and Averianov (2010) argued that it resembled the genus ''

Itatodon ''Itatodon'' is an extinct genus of primitive mammal known from the Bathonian aged Itat Formation of Russia. The genus is named after the formation, with the species being named after Leonid Petrovich Tatarinov who described the first docodont fr ...

'' ( Docodonta) and so renamed it ''Paritatodon''. Nonetheless, some recent phylogenetic studies assign it (and ''

'') to

Shuotheriidae Shuotheriidae is a small family of Jurassic mammals whose remains are found in China, England and possibly Russia. They have been proposed to be close relatives of Australosphenida, the group that contains living monotremes, together forming the ...

,Wang, Y.-Q. and Li, C.-K. 2016. Reconsideration of the systematic position of the Middle Jurassic mammaliaforms Itatodon and Paritatodon. Palaeontologia Polonica 67, 249–256. while others continue to consider the taxon a docodont. Like many Mesozoic mammals, this species is only known from its teeth, in this case two lower molars from the

Forest Marble Formation The Forest Marble is a geological formation in England. Part of the Great Oolite Group, it dates to the late Bathonian stage of the Middle Jurassic.Weishampel, David B; et al. (2004). "Dinosaur distribution (Middle Jurassic, Europe)." In: Weisha ...

in England, and a single left lower molar from the

Balabansai Formation The Balabansai Formation (sometimes transcribed Balabansay, also known as Balabansai Svita) is a geological formation in Kazakhstan, Kyrgyzstan and Uzbekistan whose strata date back to the Bathonian and Callovian stages of the Middle Jurassic. D ...

in the Fergana Depression, Kyrgyzstan.

References

Bathonian life Callovian life Middle Jurassic mammals of Asia Fossils of Kyrgyzstan Middle Jurassic mammals of Europe Jurassic England Fossils of England Fossil taxa described in 2010 Taxa named by Thomas Martin (paleontologist) Taxa named by Alexander O. Averianov Prehistoric mammal genera {{jurassic-mammal-stub