rhabdolith noun2 •A minute calcareous rodlike structure found at both the surface and the bottom of the ocean, supposed by some to be a calcareous alga. •Any Mesozoic and Cenozoic coccolith consisting of a single plate with a stem.There is no doubt that Cruxia mericii designates a sacculiform rhabdolith with a structure related to that of the rhabdoliths in Group 1. — 1984 formsrhabdoliths
