Archaeocyathid

[ ahr-kee-oh-sahy-uh-thid, ahr-kee-uh- ]

noun

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.

Origin of Archaeocyathid

<New Latin Archaeocyath(us) genus name (archaeo-archaeo- + Latin cyathus ladle <Greek kýathos) + -id²

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