Agnatha
基本解释
- n.无颚类脊椎动物
英汉例句
- Any of various primitive eellike vertebrates of the class Agnatha,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 class Agnatha, 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 of Agnatha in 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 of Agnatha in 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 (lower Devonian), 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(Damaspis vartus gen.;et sp