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Archaeocyathid

[ahr-kee-oh-sahy-uh-thid, ahr-kee-uh-] /ˌɑr ki oʊˈsaɪ ə θɪd, ɑrˌki ə-/
noun
1.
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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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