One of the riddles of mammal evolution is explained: the conservation of the number of trunk vertebrae. Dutch and American researchers have shown that this conservation is due to the role of speed in ...
The lumbar vertebrae are the largest movable bones of the backbone. Their large size and bone strength is necessary because these vertebrae support more weight than the upper two segments of the ...
IT is now nearly forty years since Dr. Gadow and Miss Abbott published their well-known paper on “The Evolution of the Vertebral Columns” in the Philosophical Transactions of 1895-96, the first ...
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