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单词 cephalon
释义

cephalon

/ˈsɛfəlɒn / /ˈkɛfəlɒn/
noun Zoology
(In some arthropods, especially trilobites) the region of the head, composed of fused segments.This problem is reflected in the ongoing uncertainty about the number of biramous appendages in the trilobite cephalon....
  • This specimen cannot be specifically identified because it lacks the cephalon and first thoracic segment.
  • Members of the Agnostina have only two segments between the cephalon and pygidium, and never have cephalic sutures.

Origin

Late 19th century: from Greek kephalē 'head'.

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更新时间:2025/3/22 16:33:07