Punctum smithi J. Morrison, 1935 Lamellate Spot

Scanning Electron Micrographs (SEM)

    Drift, Paint Rock River system, Estill Fork, 1 mi N. Estillfork, Jackson County, Alabama (0.90 mm.). Bob Winters! 3 January, 2016. Specimen culled by H. G. Lee, and SEMs produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL.