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词汇 cranidium
分类 英语词汇 英语翻译词典
释义

cranidium

英汉-汉英词典
头盖
词组 | 习惯用语
您要查找的是不是：
  • uranium n. [化]铀
  • cranium n. 头盖骨；颅骨；脑壳
  • scandium n. 钪
  • geranium n. [植]天竺葵
  • corundum n. 金刚砂，刚玉
cranidium [古生] 头盖

网络短语:
cranidium m 头盖
英语百科

Cephalon (arthropod head)

Left: Peronopsis interstrictus, an Agnostida from Cambrian age strata of Utah.Center:Praecambridium sigillumRight:The enigmatic creature, Ainiktozoon loganese, a Thylacocephala, which was once thought to be an ancestral chordate, but is now thought to be a peculiar-looking crustacean. The trilobite in the same picture is Calymene blumenbachi. Both lived in Silurian Great Britain.
The tagmata in a trilobite

The cephalon is the head section of an arthropod. It is a tagma, i.e., a specialized grouping of arthropod segments. The word cephalon derives from the Greek κεφαλή (cephale), meaning "head".

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