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Madygen Formation

Madygen Formation
Stratigraphic range: Middle - Upper Triassic, Ladinian–Carnian
Type Geological formation
Thickness 600 m
Lithology
Primary Conglomerate, sandstone, mudstone
Location
Region Turkestan Range, Batken Province
Country  Kyrgyzstan
Type section
Named for Madygen village
Named by Evgeny A. Kochnev

The Madygen Formation is a Triassic-age geologic formation in Kyrgyzstan. It consists of terrestrial lacustrine (lake) and fluvial (river) deposits. Many vertebrate fossils have been found from the formation, including those of cartilaginous fishes and unusual Triassic reptiles like Sharovipteryx and Longisquama.

Fayolia sharovi

An egg capsule likely belonging to a xenacanthid.

Lonchidion ferganensis

Teeth and egg capsules.

A hybodontid shark.

Palaeoxyris alterna

Teeth and egg capsules.

A hybodontid shark.

Madygenerpeton pustulatus

A chroniosuchid reptiliomorph.

Triassurus sixtelae

A possible early caudate (salamander) known from fossil larvae.


Kyrgyzsaurus bukhanchenkoi

A single specimen preserving the front half of a skeleton and scale impressions.

A drepanosaur.

Longisquama insignis

A reptile with an elongated row of scales along its back.

Sharovipteryx mirabilis

A gliding prolacertiform.

Sharovipteryx mirabilis jconway.png


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