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Avialae includes modern birds and their ancient relatives.  The ones listed here are the most primitive birds, retaining the long, bony tail typical of dinosaurs.

Time Period

Long-tailed Avialians lived from late Jurassic to late Cretaceous.

Common Members

Common members include Archaeopteryx, Dalianraptor, Jeholornis, Jixiangornis, Shenzouraptor, Wellnhoferia, and Yandangornis
Archaeopteryx
.
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