Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of numerous species of fossil brachiopods 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.

from the GNU version of the Collaborative International Dictionary of English

  • 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.

from The Century Dictionary and Cyclopedia

  • n. The typical genus of Spiriferidæ, having the long brachial appendages coiled into a pair of spirals, called the carriage-spring apparatus, supported upon similarly convoluted shelly lamellæ, and the shell impunctate, with a long straight hinge-line.
  • n. A member of this genus.

Etymologies

From Latin spira ("a coil") + fero ("I bear"). (Wiktionary)

Examples

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