''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 Geological period, geologic period and System (stratigraphy), 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 J ...

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 seve ...

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

Docodonta Docodonta is an order of extinct mammaliaforms that lived during the Mesozoic, from the Middle Jurassic to Early Cretaceous. They are distinguished from other early mammaliaforms by their relatively complex molar teeth, from which the order gets ...

) and so renamed it ''Paritatodon''. Nonetheless, some recent phylogenetic studies assign it (and '' Itatodon'') 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 in England, and a single left lower molar from the Balabansai Formation 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