MolluscaBase taxon details
basis of record
Schileyko, A. A. (2006). Treatise on Recent terrestrial pulmonate molluscs. Part 13. Helicidae, Pleurodontidae, Polygyridae, Ammonitellidae, Oreohelicidae, Thysanophoridae. <em>Ruthenica.</em> Supplement 2: 1765-1906. Moskva [May].
page(s): 1896 [details]
additional source
Baker, H. B. (1940). Some Antillean Sagdidae or Polygyridae. <em>The Nautilus.</em> 54(2): 54-62, pls. 4-5., available online at https://www.biodiversitylibrary.org/page/8519205
page(s): 57 [details]