Ordovician Batophoreae (Dasycladales) from Michigan / Nitecki, Matthew H. text Chicago : Field Museum of Natural History, 1976. eng p. 29-40 : 24 cm. Archaeobatophora typa n. g. and sp. of the Upper Ordovician, Richmondian Big Hill Limestone from Delta County, Michigan, is described as a member of the Dasycladaceae. Although this alga is only weakly calcified along its main axis, its morphology is unusually well preserved and allows assignment to the extant tribe Batophoreae. Caption title. "September 24, 1976." Includes bibliographical references (p. 39-40). 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-). Archaeobatophora typa. Paleobotany -- Ordovician. Paleobotany -- Michigan -- Delta County.