Dinosaur Physiology Debate Continues to Simmer

Were dinosaurs warm-blooded, cold-blooded, or what? This is one of the most persistent questions in paleontology, and one that we don't yet have a good answer to. Aside from the flaws in the question itself - life isn't neatly divided between the warm and the cool - reconstructing a dinosaur's physiology requires a level of understanding of squishy anatomy and behavior that can be difficult to attain from bones and traces. Yet paleontologists have continued to strive to understand the physiology of Triceratops and its ilk, which has bubbled over into another exchange over whether dinosaurs ran hot.

Just about a year ago University of New Mexico biologist John ...

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