请输入您要查询的英文单词:

 

单词 Agnostus
释义

Agnostus

英语百科

Agnostus

A drawing of Agnostus pisiformis, enrolled, frontal view, showing the cephalon (top), pygidium (bottom) with posterior spines hypostome with first segment of the antennae (cut off) and the frontal thoracal limb endopod, podomeres 7, 6, 5, and 4. Based on a SEM photo.,[3] original photo
Drawing of a biramous leg of Agnostus pisiformis

Agnostus is a genus of agnostid trilobites that lived during the upper Middle Cambrian–lower Upper Cambrian (approximately 506 to 492 million years ago). It is the type genus of the family Agnostidae. It is subdivided into two subgenera, Agnostus and Homagnostus.

随便看

 

英汉双解词典包含3607232条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
京ICP备09058993号 更新时间:2025/8/11 2:15:05