Spirifer

created by Webster 1913
(definition) by Webster 1913 (print) Wed Dec 22 1999 at 3:19:58

Spi"ri*fer (?), n. [NL., fr. L. spira a coil + ferreto bear.] Paleon.

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.

 

© Webster 1913.

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