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2. Avialae - Wikipedia

   en.wikipedia.org/wiki/Avialae

   Avialae ("bird wings") is a clade containing the only living dinosaurs, the birds, and their closest relatives.It is usually defined as all theropod dinosaurs more closely related to birds (Aves) than to deinonychosaurs, though alternative definitions are occasionally used (see below).

3. Sinosauropteryx - Wikipedia

   en.wikipedia.org/wiki/Sinosauropteryx

   Sinosauropteryx (meaning "Chinese reptilian wing") is a compsognathid dinosaur. Described in 1996, it was the first dinosaur taxon outside of Avialae (birds and their immediate relatives) to be found with evidence of feathers. It was covered with a coat of very simple filament-like feathers.

4. List of Mesozoic birds - Wikipedia

   en.wikipedia.org/wiki/List_of_Mesozoic_birds

   This list of Mesozoic birds is a comprehensive list of all Mesozoic dinosaurs that have been assigned to the clade Avialae (birds, in the broadest sense). The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomen dubium), or were not formally published (nomen nudum), as well as junior synonyms of more established names, and genera that are ...

5. Bird-like dinosaur with surprising features discovered in China

   www.aol.com/bird-dinosaur-surprising-features...

   Birds diverged from two-legged therapod dinosaurs (the group T. rex belonged to) during the Jurassic period, but knowledge of their early evolutionary history is hampered by a relative lack of ...

6. Archaeopteryx - Wikipedia

   en.wikipedia.org/wiki/Archaeopteryx

   Archaeopteryx (/ ˌ ɑːr k iː ˈ ɒ p t ər ɪ k s /; lit. ' old-wing '), sometimes referred to by its German name, "Urvogel" (lit. Primeval Bird) is a genus of bird-like dinosaurs.The name derives from the ancient Greek ἀρχαῖος (archaīos), meaning "ancient", and πτέρυξ (ptéryx), meaning "feather" or "wing".

7. Archaeornithes - Wikipedia

   en.wikipedia.org/wiki/Archaeornithes

   It is an evolutionary grade of transitional fossils, the primitive birds halfway between non avian dinosaur ancestors and the derived modern birds (avian dinosaur). Fossils of early birds were poorly known until the late 20th century. Of those known, all fell into either the relatively modernly built birds with fused ribcage and the breastbone ...