原级：vertebrate
1. 脊椎动物：近年来由于分子生物学的研究十分的发达,使得生物物种发育的研究突飞猛进,但科学家对于中枢神经系统 (central nervous system) 的发育过程,知道的仍然十分有限,像是过去种种的迹象证实,脊椎动物(Vertebrates) 昆虫(insects)以及像寄生虫 (worms)一类的生物,
1. In place of blue pigment, vertebrates and others turn to figment.
2. Here the big vertebrates are the parasites, freeloading off insects a tiny fraction of their size.
3. vertebrates
3. Chinese sturgeon are among the oldest species of vertebrates in the world.
4. Zhu and his team have been researching the origin and evolution of primitive fishes and early vertebrates.
5. The early split of the jawed vertebrate and the origins of bony fish play very important roles in the evolutionary history of vertebrates.