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Koshelevka Formation

Geologic formation in Russia From Wikipedia, the free encyclopedia

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The Koshelevka Formation is an early Permian formation from Russia, located on the banks of the Sylva River. It contains the Tshekarda/Chekarda lagerstätte, which is the most diverse Permian insect lagerstätte known.[1]

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Paleobiota

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An indeterminate tshekardocoleid larva from Koshelevka

The Koshelevka Formation preserves over 200 insect species from 25 orders,[1] alongside numerous plant species. Other taxa are quite rare, however they do still appear, with the uraraneid Permarachne and centipede Permocrassacus being among them.[2][3]

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