随着恐龙帝国的倾覆,地球进入了崭新的新生代,灵长类开始迅速辐射进化,产生了大量新类型。早期灵长类大都归入普罗猿科(Purgatoriidae),隶属更猴形亚目。普罗猿化石产自北美大陆西部内陆的北部,具有三四个有效种,它们的体型虽然存在差异,但与恐龙时代的大多数哺乳动物一样,都只有老鼠大小。对它们的认识主要来自牙齿和颌骨,两年前发现的踝关 With the overthrow of the dinosaur empire, the Earth entered a completely new Cenozoic and primates began to rapidly radiate and evolve into a large number of new types. Most of the early primates belong to the family Purgatoriidae, belonging to the more monkey suborder. Common apes fossils produced in North America inland from the mainland in the north, with three or four effective species, although their body size differences, but most mammals, like the dinosaurs, only the size of the mouse. Recognition of them mainly from the teeth and jaws, ankle off two years ago