Spirifer

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Spirifer \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.


     [1913 Webster]