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单词 heterostracan
释义

WordReference Random House Unabridged Dictionary of American English © 2024
het•er•os•tra•can  (het′ə rostrə kən),USA pronunciation n. [Paleontol.]
  1. Paleontologyany of several ostracoderms of the order Heterostraci, from the Silurian and Devonian Periods, having the anterior part of the body enclosed in bony plates.
  • Neo-Latin Heterostrac(i) (plural) name of the order, equivalent. to heter- heter- + Greek ostrak(ón) (singular) shell + -an

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