selenizone

名词 n.
中文释义

英文释义

名词 n.
  1. An anatomical structure in the shells of some families of sea snails, consisting of a spiral band of growth lines on the shell surface.
    — The shapes are quite similar to the shape in Tapinotomaria, but their flat to convex selenizones are placed higher on the whorls and are located in the central portion of vertical whorl faces.

词形变化

selenizones plural
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