| Bittiolum varium (L. Pfeiffer, 1840) Grass Cerith | |
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| On sea grass, Sanibel Island, Florida, April, 1973 | |
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| In bulldozed drift, New Port Richey, Pasco Co., Florida (5 mm.). Digital image by David Kirsh. | |
| Scanning Electron Micrographs (SEM) Of Fossil Specimens | |
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| Lower Pinecrest beds, Upper Tamiami Formation, Sarasota County, Florida (3.30 mm.) with SEM produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL. | |
| Bittiolum species cf. B. varium (L. Pfeiffer, 1840) Grass Cerith | |
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| Lower Pinecrest beds, Upper Tamiami Formation, Sarasota County, Florida (2.48 mm.) with SEM produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL. | |