original description
(of Unio venustus I. Lea, 1838) Lea, I. (1838). Description of new freshwater and land shells. <em>Transactions of the American Philosophical Society.</em> new ser., 6: 1-154, plates 1-24., available online at https://www.biodiversitylibrary.org/page/26881423
page(s): 4, pl. 2, fig. 4 [details]
original description
(of Unio ellipsiformis Conrad, 1836) Conrad, T. A. (1835-1838). <i>Monography of the family Unionidae, or naiades of Lamarck, (fresh water bivalve shells), of North America, illustrated by figures drawn on stone from nature</i>. Philadelphia: Dobson. 1: 1-12, pls 1-5 [1835]; 8: 65-72, pls. 36-40 [1837]; 10: 81-94, pls 46-51 [1838]; 11: 95-102, pls 52-56 [1838]. , available online at http://biodiversitylibrary.org/page/4206381
page(s): 60, pl. 34, fig. 1 [details]
original description
(of Unio spatulatus I. Lea, 1845) Lea, I. (1845). Descriptions of new fresh water and land shells. <em>Proceedings of the American Philosophical Society.</em> 4(33): 162-168 [5 December 1845]., available online at http://biodiversitylibrary.org/page/33100618
page(s): 164 [details]
basis of record
Watters, G.; Hoggarth, M. A.; Stansberry, D. H. (2009). The Freshwater Mussels of Ohio. <em>Ohio State University Press, Columbus.</em> xiii + 421 pp. [details]
additional source
InvertEBase. (2015). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase project (invertebase.org). [details]
From editor or global species database
Type locality USA, Michigan, without a precise locality [details]
From editor or global species database
From other sources