Cavolina Tridentata Small 320×296 Medium 640×592 Large 1024×947 Download Tiff Original 2400×2219 | (442.9 KB) Description A modern shell-bearing pteropod. Keywords cavolina tridentata, pteropod, shell Galleries Snails and Slugs Source: Amadeus W. Grabau A Textbook of Geology (Boston: D.C. Heath & Co., 1920) 313
