| 释义 |
ag·na·tha AHDˈagnəthə
基本英英例句
n.无颚类脊椎动物¹⁰⁰
Noun:
superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct formsAny of various primitive eellike vertebrates of the classAgnatha,such as a lamprey,lacking jaws and true teeth and having a circular,sucking mouth.圆口纲脊椎动物，一种类似鳗鱼的无颚纲原始脊椎动物，如盲鳗，没有下颚和真正的牙齿，而长着圆形吮吸的嘴。
Any of various primitive eellike vertebrates of the classAgnatha, such as a lamprey, lacking jaws and true teeth and having a circular, sucking mouth.圆口纲脊椎动物一种类似鳗鱼的无颚纲原始脊椎动物，如盲鳗，没有下颚和真正的牙齿，而长着圆形吮吸的嘴
The Galeaspid is one major group ofAgnathain the Middle Paleozoic,and is mainly distributed in China and North Vietnam.盔甲鱼类是古生代中期化石无颌类的主要类群,其分布主要限于我国境内以及越南北部。
The Galeaspid is one major group ofAgnathain the Middle Paleozoic, and is mainly distributed in China and North Vietnam.摘要盔甲鱼类是古生代中期化石无颌类的主要类群，其分布主要限于我国境内以及越南北部。
A new form of Polybranchiaspids,Agnatha, Damaspis vartus gen. et sp. nov., was collected from the lower part of Cuifengshan formation , Qujing district, Yunnan province.⎩本文记述了云南曲靖早泥盆世翠峰山组西山村段多鳃鱼类一新属种;变异坝鱼⎩盔甲鱼类的侧线系统⎫ |