Clarke, A. H. (1981). The Tribe Alasmidontini (Unionidae: Anodontinae), part I: Pegias, Alasmidonta, and Arcidens. Smithsonian Contributions to Zoology. 326: 1-101.
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Clarke, A. H.
1981
The Tribe Alasmidontini (Unionidae: Anodontinae), part I: <i>Pegias</i>, <i>Alasmidonta</i>, and <i>Arcidens</i>