Huge tail muscle made carnotaurus 'speedy'
Washington, Oct 15 (ANI): A meat-eating dinosaur that preyed on its plant-eating neighbours in South America was a lot faster and deadlier than first thought, a University of Alberta researcher has found.
Carnotaurus was a seven-metre-long predator with a huge tail muscle that U of A paleontology graduate student Scott Persons says made it one of the fastest running hunters of its time.
A close examination of the tail bones of Carnotaurus showed its caudofemoralis muscle had a tendon that attached to its upper leg bones. Flexing this muscle pulled the legs backwards and gave Carnotaurus more power and speed in every step, the report said.
Persons' examination of the tail of Carnotaurus showed that along its length were pairs of tall rib-like bones that interlocked with the next pair in line.
Using 3-D computer models, Persons recreated the tail muscles of Carnotaurus. He found that the unusual tail ribs supported a huge caudofemoralis muscle.
The interlocked bone structure along the dinosaur's tail did present one drawback: the tail was rigid, making it difficult for the hunter to make quick, fluid turns.
Persons says that what Carnotaurus gave up in maneuverability, it made up for in straight ahead speed.
The study was recently published in the journal PLoS ONE. (ANI)
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