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A new study published in the Proceedings of the National Academy of Sciences provides yet more evidence that birds did not descend from ground-dwelling theropod dinosaurs, experts say, and continues to challenge decades of accepted theories about the evolution of flight.
Researchers at Oregon State University have made a fundamental new discovery about how birds breathe and have a lung capacity that allows for flight â€“ and the finding means it's unlikely that birds descended from any known theropod dinosaurs.
- Sleep; the state or condition of being asleep.
- The state or condition of numbness of a part due to pressure on a nerve: as, the obdormition of a limb.