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How Speed Restricts Evolutionary Changes of the Vertebral Column Explained

by Dr. Enozia Vakil on July 15, 2014 at 1:01 PM
 How Speed Restricts Evolutionary Changes of the Vertebral Column Explained

The strong conservation of trunk vertebrae, which is one of the riddles of mammal evolution, has now been explained. Researchers of the Naturalis Biodiversity Center and the University of Utah show that this conservation is probably due to the essential role of speed and agility in survival of fast running mammals.

They measured variation in vertebrae of 774 individual mammal skeletons of both fast and slow running species. The researchers found that a combination of developmental and biomechanical problems prevents evolutionary change in the number of trunk vertebrae in fast running and agile mammals. In contrast, these problems barely affect slow and sturdy mammals. The study will appear next Monday, 14 July 2014 in PNAS.

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Source: Eurekalert

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