|Caecum brasilicum de Folin, 1874|
|From rubble on beach west of Portobelo, Colón Province, (Caribbean) Panama (1.8 mm.). Digital images by David Kirsh.|
|Scanning Electron Micrographs (SEM) Of Fossil Specimen|
Lower Pinecrest beds, Upper Tamiami Formation, Sarasota County, Florida (2.18 mm.) with SEMs produced in collaboration with Dr. Ann Heatherington, Dept. of Geology, University of Florida, Gainesville, FL.