Scales, feathers and dinosaurs

Article Abstract:

Evidences suggest that all coelurosaurs with the possible exception of gigantic species such as Tyrannosaurus rex are feathered based on the presence of feathers in some extinct coelurosaurs and all living birds. This new dinosaur, a carnivore named Juravenator, is represented by a beautifully preserved skeleton collected from Late Jurassic deposits from Solnhofen, Germany, the source of all specimens of the earliest-known bird Archaeopteryx.

United Kingdom, Theropoda, Theropods

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A new troodontid dinosaur from China with avian-like sleeping posture

Article Abstract:

The discovery of a new troodontid taxon from the early Cretaceous Yixian formation of western Liaoning, China is reported. Evidence of this behaviour outside of the crown group Aves further demonstrates that many bird features occurred early in dinosaurian evolution.

China, Dinosaurs, Cretaceous period

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Branched integumental structures in Sinornithosaurus and the origin of feathers

Article Abstract:

Research is presented concerning the evolutionary origin of feathers. The filamentous appendages of of the dinosaur Sinornithosaurus millenii, which exhibit two types of branch-like structures, are discussed.

Evolution (Biology), Birds, Feathers, Letter to the Editor, Origin, Saurischia, Saurischians

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