Retusa sulcata (d’Orbigny, 1841) Sulcate Barrel-bubble

Scanning Electron Micrographs (SEM)

Retusa sulcata (d’Orbigny, 1841) Sulcate Barrel-bubbleRetusa sulcata (d’Orbigny, 1841) Sulcate Barrel-bubble

   Lower Pinecrest beds, Upper Tamiami Formation, Sarasota County, Florida (1.48 mm. on the left and 1.70 mm. on the right). SEMs produced in collaboration with Dr. Ann Heatherington, Dept. of Geology, University of Florida, Gainesville, FL.