Thuramminoides sphaeroidalis Plummer, 1945Class: Astrorhizata Subclass: Astrorhizana Order: Astrorhizida Family: PsammosphaeridaeTaxon Profile found in Missouri and Illinois Midwestern USA USA from 27 localities described in the source Geological Time: Carboniferous Mississippian Lower Mississippian Chouteau Group Limestones images are shown with permission of micropaleontology and are provided by James E. and Barbara M. Conkin View of a specimen of Thuramminoides sphaeroidalis Plummer, 1945 The identification is based upon: Conkin, James E., Conkin, Barbara M. and Canis, Wayne F., 1968: Mississippian Foraminifera of the United States Part 3: The limestones of the Chouteau Group in Missouri and Illinois. in micropaleontology Volume 14 Number 2, April 1968 Pages 133-178 Plate 3, Fig. 16-17 ![]() |
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