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Dictionary

Ar•chae•o•cy•a•thid

Pronunciation: (är"kē-ō-sī'u-thid, är-kē"u-), [key]
—n.
one of the marine invertebrates of the extinct phylum Archaeocyatha, widely distributed during the Cambrian Period, having a limy, typically conical or cylindrical skeleton composed of sievelike inner and outer walls.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

archaeoastronomy

archaeocyte

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