jawless

The lampreys are modern representatives of the jawless vertebrates, which are thought to be the ancestor of jawed vertebrates.

而七鳃鳗是现存最为古老的无颌类脊椎动物之一，也可以将其理解为有颌类脊椎动物的共同祖先。

Extinct fishlike jawless vertebrate having a heavily armored body; of the Paleozoic.

已经灭绝的长有很重披甲的鱼形无颚动物；古生代的生物。

VLRs are leucine-rich repeat ( LRR) proteins that mediate adaptive immunity in jawless vertebrates ( hagfish and lamprey).

可变淋巴细胞受体是富含亮氨酸重复序列（leucine-rich repeat，LRR）蛋白，调控无颌类脊椎动物（八目鳗和七鳃鳗）的获得性免疫。

A group of vertebrates comprising both cartilaginous and bony fishes and sometimes including the jawless vertebrates; not used technically.

包括软骨和多骨鱼类脊椎动物，有时包括无下颌的脊椎动物；不用于学术上。

Extinct group of armored jawless fishes or fishlike vertebrate; taxonomy is not clear.

原始的无颚脊椎动物；七鳃鳗；八目鳗类鱼。现已灭绝的无颚有甲鱼类或鱼状脊椎动物；其分类尚不明确。

Extinct group of armored jawless vertebrates; taxonomy is not clear.

一种已灭绝的无下巴甲壳脊椎动物；其分类尚不明确。