Frierson, L.S. 1914. Observations on the genus Symphynota, Lea. Nautilus 28: 40. https://www.biodiversitylibrary.org/page/1750495.
(error for Hemistena Rafinesque, 1820)
Frierson, 1914. Nautilus 28: 40.
Type species: Anodonta (Lastena) lata Rafinesque, 1820 = Hemistena lata
(new name for Simpsonaias Frierson, 1914)
Frierson, 1914. Nautilus 28: 40.
Type species: Alasmodonta ambigua Say, 1825 = Simpsonaias ambigua