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Longisquama insignis

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description Longisquama insignis Overview

Longisquama insignis is an extinct small diapsid reptile known from Middle or Late Triassic deposits of Kyrgyzstan, especially the Madygen Formation. Fossils preserve paired elongated dorsal appendages, which were interpreted in 2000 as non-avian feathers but later argued to be specialized scales or other skin structures; their identity remains disputed. The taxon's position within reptile evolution is also unresolved, making it a recurring subject in discussions of early integumentary structures.

help Longisquama insignis FAQ

What was unusual about Longisquama insignis?

Longisquama insignis was a small diapsid reptile with paired elongated dorsal appendages. The fossils come especially from the Madygen Formation of Kyrgyzstan.

Where did Longisquama insignis live?

Its fossils are associated with Middle or Late Triassic deposits in Kyrgyzstan. The Madygen Formation is the best-known geological source for the species.

Were Longisquama's dorsal appendages feathers?

In 2000, the appendages were interpreted as non-avian feathers. Later researchers argued for other explanations, so the feather interpretation remains disputed.

Is Longisquama insignis a dinosaur?

No, it is generally described as a small diapsid reptile rather than a dinosaur. Its unusual back appendages are the main reason it remains scientifically interesting.

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