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

Scanning Electron Micrograph (SEM)

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

   Lower Pinecrest Beds, Upper Tamiami Formation, Sarasota County, Florida (1.48 mm.). SEM produced in collaboration with Dr. Ann Heatherington, Dept. of Geology, University of Florida, Gainesville, FL.