兽孔类在盘古大陆上日益兴盛，很快它们就发展成了各种形态，从类恐龙的食肉者到笨重的草食者。
The therapsids flourished during the Permian , rapidly evolving many different forms , ranging from dinosaur-like fanged flesh-eaters to plodding herbivores .
兽孔类