This is a very good technical article on endothermy and ectothermy, and some of the research was conducted in Australia. A longish article, but interesting if you like this kind of stuff.
http://www.rednova.com/news/science...at_new_twists_in_the_evolution_of_endothermy/
Hix
http://www.rednova.com/news/science...at_new_twists_in_the_evolution_of_endothermy/
Hix