These birds-and all more advanced ones-have a stubby pygostyle instead of a long, bony tail.  But like their primitive relatives (and unlike more advanced birds), these had fully developed hands and claws.

Time PeriodEdit

These birds lived during the early Cretaceous.

Common MembersEdit

Common members include Changchengornis, Chaoyangia, Confuciusornis, Jinzhouornis, Liaoningornis, Omivoropteryx, Proornis, and Sapeornis

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