This bibliographic index includes systematic and stratigraphic entries on the species of North American archaeocyathids. Each entry consists of name, reference, stratigraphic and geographic location, and number and depository of cited specimens. Seventy-five species are recognized and distributed in twenty-six genera. Short sections on the definition, history, affinities and classification of archaeocyathids are included Includes bibliographical references (p. 213-220) This bibliographic index includes systematic and stratigraphic entries on the species of North American archaeocyathids. Each entry consists of name, reference, stratigraphic and geographic location, and number and depository of cited specimens. Seventy-five species are recognized and distributed in twenty-six genera. Short sections on the definition, history, affinities and classification of archaeocyathids are included Fieldiana series has been published as Geological Series by Field Columbian Museum (1895-1909) and Field Museum of Natural History (1909-1943), and as Fieldiana: Geology by Chicago Natural History Museum (1945-1966) and Field Museum of Natural History (1966-)