脊索动物门

翻译成中文就是：人类最终的分类位置为真核生物域、动物界、脊索动物门、真兽亚纲、灵长目、人科、人属、智人。

Humans are classified into the domain Eukary , kingdom Animalia , phylum Chordata , subphylum Vertebrata , class-s Mammalia , order Primates , family Hominidae , genus Homo , and species sapiens .

海鞘（Ascidian）属于脊索动物门（Chordates），尾索动物亚门（Urochordata），海鞘纲（Ascidiacea），全世界约有2000种，广泛分布于各海域中。

Styela plicata is an ascidian which belongs to class Ascidiacea , subphylum urochordata , phylum Chordates . About 2000 kinds of ascidians have been found in the nature and they distribute over the maritime space .

鳄鱼是脊索动物门爬行纲鳄目动物的通称。鳄鱼不仅具有良好的经济价值，还有极高的药用价值。

The crocodile is a general term of animals of Crocodilia , Reptilia , which have high economic and medical value .