Are Birds Really Dinosaurs?
10,000 Birds
JUNE 16, 2011
It is much stranger and illustrative of the ways of evolution to point out that whales are a form of “hoofed animal&# (unlikely but true). But overall, it’s not common if you exclude bird and bats, the two main flying vertebrate groups. Facultative (occasional, used when needed) bipedalism occurs in one group of carnivores.
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