Traits taxon details
original description
Woodward, H. (1871). The Tertiary Shells of the Amazons Valley. <em>The Annals and Magazine of Natural History, fourth series.</em> 7(37-38): 59-64, 101-109., available online at https://www.biodiversitylibrary.org/page/25119167#page/73/mode/1up page(s): 103 [details]
additional source
Wesselingh, F.P. (2006). Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia. <em>Scripta Geologica.</em> 133: 19-290., available online at http://www.repository.naturalis.nl/document/41346 page(s): 23-26, figs 4-7 [details]
redescription
Conrad, T. A. (1871). Descriptions of new fossil shells of the upper Amazon. <em>American Journal of Conchology.</em> 6: 192-198., available online at https://www.biodiversitylibrary.org/page/15854015 page(s): 195, pl. 10, figs 5, 11 [details]
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