Jinfengopteryx elegans

Jinfengopteryx is a small, 55 cm (2 ft) long theropod dinosaur. It was found preserved with extensive impressions of pennaceous feathers, but it lacks flight feathers on its hind legs, which are present in related dinosaurs such as Microraptor and Pedopenna.

The authors of the original description considered Jinfengopteryx to be the most basal avialan (bird), and a member of the family Archaeopterygidae. However, subsequent analysis of this dinosaur shows that has many features in common with the Troodontidae (such as an enlarged claw on its short second toe), and it likely belongs to this group.

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