Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio crassus nominal species Unio batavus var. longus de Joannis, 1859
de Joannis, 1859, Ann. Soc. Linn. Maine-et-Loire 3: 288, pl. 10, fig. 3.
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio longus Philippi, 1869)
= Unio crassus Taxonomic Opinions
+ Unio batavus Maton et Rackett — Germain, 1931
= Unio batavus var. longus Nobis — de Joannis, 1859
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