from The Century Dictionary and Cyclopedia

  • n. A genus of tetrabranchiate cephalopods, of the family Ammonitidæ, or made type of a family Crioceratidæ, containing discoidal ammonites having the whorls discrete: so called from the resemblance to a ram's horn. The species are numerous. Also Criocera, Crioceratites, and Criocerus.


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