Polystomella Small 269×320 Medium 538×640 Large 861×1024 Download Tiff Original 2017×2400 | (1.6 MB) Description Modern Foraminiferal types - Polystomella Keywords foraminifera, Polystomella, protozoa Galleries Other Mollusks Source: Amadeus W. Grabau A Textbook of Geology (Boston: D.C. Heath & Co., 1920) 275 Courtesy the private collection of Roy Winkelman
