spirifer
中文翻译
石燕贝属
英文解释
n. Any one of numerous species of fossil brachipods of the
genus Spirifer, or Delthyris, and allied genera, in which the long
calcareous supports of the arms form a large spiral, or helix, on each
side.
常见例句
1
Any one of numerous species of fossil brachipods of the genus Spirifer, or Delthyris, and allied genera, in which the long calcareous supports of the arms form a large spiral, or helix, on each side.