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 Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio crassus nominal species Unio fuscus Lea, 1836
 
     ‘Zieg.’ Lea, 1836, Synopsis Fam. Naiades: 27.
    (intro'd as syn of Mya batava Maton & Rackett, 1807)
 
= Unio crassus Taxonomic Opinions
	+ Margaron (Unio) batavus (Mat. & Ract.) — Lea, 1870 
	+ Margaron (Unio) batavus (Lam.) — Lea, 1852 
	+ Margarita (Unio) batava Lam. Pfeif. Flem. — Lea, 1838 
	+ Margarita (Unio) batava Lam. — Lea, 1836 
 
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