Thigh bone

... way birds breathe and the relative lack of movement in birds’ upper leg bones. While most walking animals (including humans) move the upper leg bone ... really strange that no one realized this before. The position of the thigh bone and muscles in birds is critical to their lung function, which ...

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... perhaps humans (Holliday, 1997). On the basis of change in relative bone size (e.g., femur, that is thigh bone, length) comparing fossils dating from 6,000 to 30,000 years ago to modern populations, ...

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