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Cold-blooded vs. warm-blooded
I've been lurking on the list for a few days, and am enjoying the
I hope nobody minds if I ask a question. I'm a writer - and have a contract
to write a book about dinosaurs for gifted and talented youngsters. I have
Ph.D degrees in biology and geology, but am no dinosaur expert.
As I understand the current thoughts about whether dinosaurs were warm- or
cold-blooded, they go like like this:
1) small meat-eating dinosaurs were warm-blooded - with high metabolic rates
to sustain their body temperature.
2) big dinosaurs were probably cold-blooded because their huge bulk
helped them stay warm and allowed them to stay active - even in cool
3) Medium sized dinosaurs ???? some cold-blooded and some warm-blooded ???
I haven't really read anything specifically addressing this topic.
Is this about right? Or are there more up-to-date theories?
Thanks for any comments,