Traits taxon details
original description
Morse, E. S. (1864). Observations on the terrestrial Pulmonifera of Maine, including a catalogue of all the species of terrestrial and fluviatile Mollusca known to inhabit the state. <em>Journal of the Portland Society of Natural History.</em> 1(1): 1-63, pls 1-10., available online at https://www.biodiversitylibrary.org/page/16070837 page(s): 25-26 [details]
original description
(of Helicodiscus (Hebetodiscus) H. B. Baker, 1929) Baker, H. B. (1929). New southern Appalachian land snails. <em>The Nautilus.</em> 42(3): 86-93, pl. 3., available online at https://biodiversitylibrary.org/page/34681721 page(s): 86 [details]
original description
(of Helicodiscus (Pseudiscus) J. P. E. Morrison, 1942) Morrison, J. P. E. (1942). Preliminary report on mollusks found in the shell mounds of the Pickwick landing basin in the Tennessee River Valley. <em>Bureau of American Ethnology, Bulletin.</em> 129: 337-392., available online at https://www.biodiversitylibrary.org/page/27424799 page(s): 379 [details] Available for editors 
original description
(of Helicodiscus (Troglodiscus) Hubricht, 1962) Hubricht, L. (1962). New species of <i>Helicodiscus</i> from the eastern United States. <em>The Nautilus.</em> 75(3): 102-107, pls. 7-9., available online at https://www.biodiversitylibrary.org/page/8283022 page(s): 105 [details]
original description
(of Gastrodonta (Clappiella) H. B. Baker, 1929) Baker, H. B. (1929). New southern Appalachian land snails. <em>The Nautilus.</em> 42(3): 86-93, pl. 3., available online at https://biodiversitylibrary.org/page/34681721 page(s): 90 [details]
basis of record
Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16th, 2017. [details] 
Present Inaccurate Introduced: alien Containing type locality
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