NATS 1540 Midterm: Dino Midterm Review

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If no other changes had been made to its posture, such a dinosaur would have been unbalanced and constantly pitch forward on to its nose. To compensate for the loss of the heavy tail , bodies of these theropods were subtly altered: change pubic bone rotated backwards so that it lay parallel to the ischium also seen in. Birds also have a short, and greatly stiffened, chest region to withstand the forces associated with anchoring the powerful flight muscles. Basking is the ectotherm"s (cold-blooded) way of gaining body heat, so a furry or feathered lizard is a biological impossibility. Chapter 8 - the future of research on the past. K-t extinctions: the end of dinosaurs none were to be found in rocks younger than the end of the cretaceous period (approximately 65. In fact, it came to be recognized that the very end of the cretaceous period, leading into the.

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