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Crocodiles can’t fly. Birds can. Scientists have finally figured out why

Timothy A. Gonsalves / Wikimedai, CC BY-SA The closest living relatives of crocodiles and alligators are, perhaps surprisingly, birds. They are both archosauriforms, a group of species that originated about 250 million years ago near the beginning of the Triassic period. The group soon split into two lineages: one led to crocodiles (Pseudosuchia), while the other led to dinosaurs and then birds (Avemetatarsalia). This means there is a combined 500 million years of evolutionary change between…

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