>Hello, I have a question involving the types of enviroments that Therapsids could live in. I have seen several illustrations by Bakker that showed woolly Therapsids in snowy, wintery type enviroments. Is it know whether their were any of these enviroments around when Gorgonopsians and such lived, or any fossil evidence of them living in such a enviroment?
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During the early Permian, the gondwanan parts of the world experienced a massive glaciation, so snowy environments definately existed as the therapsids were evolving, but i'm not sure when gorgonopsians specifically appeared, and wether they're before or after the widespread glaciation (i have a feeling they came after it - of course that doesn't mean that 'wintery' environments weren't around in high latitude areas (perhaps periodically rather than year-round). There's a good book on therapsids at the University of Melbourne Biomed library whose title i can't remember - i think it might be "Ecology and Evolution of the Mammal-like Reptiles", or some similar title. Anyway, it has a paper or two on Permian climate. I'm sorry i can't recall the exact title (or the name of the paper), but i'll have a look next time i'm at uni.)