Caecum ibex Dall, 1892 Fossil
Scanning Electron Micrographs (SEM) Of Fossil Specimens
Caecum ibex Dall, 1892 Fossil

    Lower Pinecrest beds, Upper Tamiami Formation, Sarasota County, Florida. SEMs produced in collaboration with Dr. Ann Heatherington, Dept. of Geology, University of Florida, Gainesville, FL. Caecum zaagmani de Jong & Coomans, 1988, known from Bonaire and Aruba, may be descendant. Note that, like Caecum tortile Dall, 1892, Caecum cycloferum de Folin, 1867, and Caecum subspirale Carpenter, 1857, the longitudinal sculpture has a slight clockwise twist in the direction of growth.

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