Arene tricarinata (Stearns, 1872) Gem Cyclostreme
Scanning Electron Micrographs (SEM) of fossil specimens
Arene tricarinata (Stearns, 1872) Gem Cyclostreme
Arene tricarinata (Stearns, 1872) Gem Cyclostreme
Arene tricarinata (Stearns, 1872) Gem Cyclostreme Arene tricarinata (Stearns, 1872) Gem Cyclostreme

    Lower Pinecrest beds, Upper Tamiami Formation, Sarasota County, Florida (3.79 mm. for the top specimen and 3.48 mm. for the bottom specimen). SEMs produced in collaboration with Dr. Ann Heatherington, Dept. of Geology, University of Florida, Gainesville,