Ar•chae•o•cy•a•thid(är′kē ō sī′ə thid, är kē′ə-),USA pronunciationn.
Paleontologyone 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.
Greek kýathos) + -id2
Neo-Latin Archaeocyath(us) genus name (archaeo-archaeo- + Latin cyathus ladle