Gastrocopta cristata (Pilsbry and Vanatta, 1900) Crested Snaggletooth On The Top |
Gastrocopta riparia Pilsbry, 1916 Gulf Coast Snaggletooth On The Bottom |
Scanning Electron Micrographs (SEM) |
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Drift associated with major flooding of the Brazos River, Quintana Beach County Park, Freeport, Brazoria County, Texas. Steve Rosenthal! 24, 25, 27 June, 2016. SEMs produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL. |