spirifer

石燕贝属

词形变化

spirifers 复数 spirifers

释义与例句

n.
  1. 1.

    Any of numerous species of fossil brachiopods of the genera †Spirifer and †Delthyris and allied genera in order †Spiriferida, in which the long calcareous supports of the arms form a large spiral, or helix, on each side.

    生物

词源

From Latin spira (“a coil”) + fero (“to bear”).

来源：wiktionary