THESAURUS

Spirifer Thesaurus

(paleontology) 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.

Related Words

Related dictionary entries include spirorbid, spirillum, spirorchiid, spirophorid, spirobacterium, spiraster.

Continue With Spirifer

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