Traits taxon details
original description
(of Anisothyris (Pachydon) tumida Etheridge, 1879 †) Etheridge, R. (1879). Notes on the Mollusca collected by C. Barrington Brown, Esq., A.R.S.M., from the Tertiary Deposits of Solimões and Javary Rivers, Brazil. <em>Quarterly Journal of the Geological Society.</em> 35: 82-88., available online at https://archive.org/stream/quarterlyjourna351879geol#page/82/mode/2up page(s): 83, pl. 7, fig. 2 [details]
original description
(of ) 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): 107-108, pl. 5, fig. 8a, b [details]
basis of record
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): 249-251, figs 323-324 [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): 197, pl. 10, fig. 12 [details]
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