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Dr. Robert T. Dillon, Jr. is America’s foremost authority on freshwater gastropods.  From 1983 until his retirement in 2016 he was Professor of Biology at the College of Charleston in South Carolina.  He is the author of The Ecology of Freshwater Molluscs (Cambridge University Press, 2000) and over 60 scientific papers on the genetics, evolution, and ecology of snails.  A former president of the American Malacological Society, Dr. Dillon wrote the freshwater gastropod chapter for the popular 2006 AMS publication, The Mollusks: A Guide to their Study, Collection and Preservation.  In 1998 he founded the Freshwater Gastropods of North America Project, a long-term, collaborative effort to inventory and monograph the entire gastropod fauna inhabiting every river, lake and stream throughout the continent north of Mexico.


In 1977 Fred Thompson recognized an enigmatic subset of teensy-little freshwater gastropods he called “small narrow hydrobiids that have in common a carinate body whorl.”  So in 2016 we obsessed about Marstonia letsoni and in 2020 we obsessed about M. ozarkensis.  If you’re bored and crazy enough to join me this month for a lengthy obsession about the original member of Thompson’s obscure little group, Marstonia scalariformis, check out the FWGNA Blog: THE SNHTHICACBW Marstonia 5: scalariformis.

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