| Caecum plicatum Carpenter, 1858 Plicate Caecum |
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| Beach drift, "Xeno Beach," Eleuthera, Bahamas (all three specimens are about 3 mm.).| Digital images by David Kirsh. |
| Scanning Electron Micrograph (SEM) Of Fossil Specimen |
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Lower Pinecrest beds, Upper Tamiami Formation, Sarasota County, Florida. SEM produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL. |
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