''Madysaurus'' (meaning " Madygen reptile") is an extinct genus of

cynodont Cynodontia () is a clade of eutheriodont therapsids that first appeared in the Late Permian (approximately 260 Megaannum, mya), and extensively diversified after the Permian–Triassic extinction event. Mammals are cynodonts, as are their extin ...

s which existed in

Kyrgyzstan Kyrgyzstan, officially the Kyrgyz Republic, is a landlocked country in Central Asia lying in the Tian Shan and Pamir Mountains, Pamir mountain ranges. Bishkek is the Capital city, capital and List of cities in Kyrgyzstan, largest city. Kyrgyz ...

. It was first named by Leonid Petrovich Tatarinov in 2005. ''Madysaurus'' is known from the Madygen Formation, a

Triassic The Triassic ( ; sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.4 Mya. The Triassic is t ...

Lagerstätte A Fossil-Lagerstätte (, from ''Lager'' 'storage, lair' '' Stätte'' 'place'; plural ''Lagerstätten'') is a sedimentary deposit that preserves an exceptionally high amount of palaeontological information. ''Konzentrat-Lagerstätten'' preserv ...

that also includes well-preserved remains of insects and small reptiles like '' Sharovipteryx'' and ''

Longisquama ''Longisquama'' is a genus of extinct reptile. There is only one species, ''Longisquama insignis'', known from a poorly preserved skeleton and several incomplete fossil impressions from the Middle Triassic, Middle to Late Triassic Madygen Formati ...

''. ''Madysaurus'' is one of the most primitive cynodonts and is placed in its own family, Madysauridae.

References

Cynodontia Middle Triassic synapsids of Asia Late Triassic synapsids of Asia Carnian genera Fossils of Kyrgyzstan Madygen Formation Fossil taxa described in 2005 Taxa named by Leonid Petrovich Tatarinov {{Paleo-cynodont-stub