Traits taxon details
original description
Palmer, K. v. W. (1945). Fossil fresh-water Mollusca from the State of Monagas, Venezuela. <em>Bulletins of American Paleontology.</em> 31(118): 1-34., available online at https://www.biodiversitylibrary.org/page/10660362 page(s): 23-24, pl. 3, figs 5, 6, 13 [details] Available for editors 
additional source
Nuttall, C. P. (1990). A review of the Tertiary non-marine molluscan faunas of the Pebasian and other inland basins of north-western South America. <em>Bulletin of The British Museum (Natural History), Geology Series.</em> 45(2): 165-371., available online at https://www.biodiversitylibrary.org/page/45474563 page(s): 342 [details]
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