Definitions

from the GNU version of the Collaborative International Dictionary of English

  • n. A genus of fossil corals abundant in the Silurian and Devonian rocks, having polygonal cells with perforated walls.

from The Century Dictionary and Cyclopedia

  • n. A genus of fossil stone-corals, giving name to the family Favositid√¶, occurring in the Silurian, Devonian, and Carboniferous strata: so called from the regular polygonal arrangement of the porecells, as in

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