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normally associated with birds. All protobirds are extinct. Zhou and Farlow (2001), for example, used the term "protobird" for primitive members of the clade...

in the most derived groups. There is some evidence for precociality in protobirds and troodontids. Enantiornithes at least were superprecocial in a way...

their diet and lifestyle are uncertain) †Archaeopterygidae (small, winged protobirds) †Dromaeosauridae (small to medium-sized theropods) †Troodontidae (small...

life can be correlated with the evolution of flight on a macro scale. If protobirds are compared to hatchlings their physical traits such as wing size and...