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Helicodiscus aldrichianus (G. Clapp, 1907) Burrowing Coil |
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Scanning Electron Micrograph (SEM) |
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| Paint Rock River system, Estill Fork, 1 mi N. Estillfork, Jackson County, Alabama, 1.76 mm. for the top image and 2.03 mm. maximum diameter (Dmax) for the bottom image. Bob Winters! 17 March, 2015. Specimen culled by H. G. Lee, and SEM produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL. |
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The specimen (2.5 mm.) pictured in two views above was collected at the same location as the two specimens pictured in the top two images but on a later date. Digital images by Lori Schroeder. |
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