Punctum vitreum (H. B. Baker, 1930) Glass Spot

Scanning Electron Micrographs (SEM)

    Drift, Paint Rock River system, Estill Fork, 1 mi N. Estillfork, Jackson County, Alabama. The three specimens illustrated range in size from 0.94 - 1.04 mm. Specimen culled by H. G. Lee, and SEMs produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL.