1·The reptilian brain is functioning on autopilot despite the permanent loss of other cortexes.
尽管其他皮质永久丧失，爬行动物的大脑仍在自动运行。
2·Their skulls, pelvises, and hind feet are reptilian.
它们的头骨、骨盆和后脚属于爬行动物。
3·It had feathers and other traits of living birds but also vestiges of a reptilian past, such as teeth in its mouth, claws on its wings, and a long, bony tail.
始祖鸟拥有羽毛，它身上既有现代鸟类的特征，也有远古爬行动物的痕迹，例如口中有牙齿，翅膀上有爪子，还有一条硕长的骨质尾巴。
4·Feathers in their most primitive form were single filaments, resembling quills, that jutted from reptilian skin.
最原始的羽毛是单纤维，类似于刚毛，从爬行动物的皮肤上突出来。
5·Skeptics have claimed that the structures were just shredded collagen fibers and that Sinosauropteryx had a smooth reptilian skin.
不过怀疑者声称这种结构不过是被撕碎的胶原纤维，而中华龙鸟有着光滑的爬行动物的皮肤。