Cornu Ammonis

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Cor´nu Am`mo´nis

1.(Paleon.) A fossil shell, curved like a ram's horn; an obsolete name for an ammonite.
References in periodicals archive ?
It contains two main interlocking parts: Ammon's horn and the dentate gyrus.
The countermark pattern was apparently intended to portray the cornua ammonis or Ammon's horns.