Traits taxon details
original description
Ortmann, A. E. (1916). The anatomical structure of <i>Gonidea angulata</i> (Lea). <em>The Nautilus.</em> 30(5): 50-53., available online at https://www.biodiversitylibrary.org/page/1748585 page(s): 53 [details]
original description
(of Heudeaninae Modell, 1942) Modell, H. (1942). Das natürlich System der Najaden. <em>Archiv für Molluskenkunde.</em> 74(5–6): 161–191, pls 5–7. page(s): 184 [details] Available for editors 
basis of record
Graf, D. & Cummings, K. (2007). Review of the systematics and global diversity of freshwater mussel species (Bivalvia: Unionoida). <em>Journal of Molluscan Studies.</em> 73(4): 291-314. [details]
additional source
InvertEBase. (2015). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase project (invertebase.org). [details]
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