Solariorbis infracarinatus Gabb, 1881 Gabb’s Vitrinella

Scanning Electron Micrographs (SEM) of fossil specimens

L to R, top to bottom: 0.87 mm UF 291907 (three views); 1.22 mm UF 252758; 1.45 mm UF 252757 (two views). SMR 10, lower Pinecrest beds, Upper Tamiami Formation, Sarasota County, Florida. SEMs produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL. Note remarkable allomorphic growth (obsolescence of sculpture, stricture of umbilicus). See also Solariorbis infracarinatus Gabb, 1881 Gabb's Vitrinella and Solariorbis eugenes Pilsbry in Olsson and Harbison, 1953, where similar allomorphy is depicted.