ammonitella

名词 n.
中文释义

英文释义

名词 n.
  1. The initial part of a spiral shell, originating from a central chamber, in ammonoid molluscs
    — The embryonic stage, consisting of a small ellipsoid protoconch and ammonitella, ends at about 0.6 mm.

词形变化

ammonitellas plural
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