Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Nephronaias aztecorum
Nephronaias aztecorum (Philippi, 1847), Tamaulipas, stream at Rt. Mex. 80 ca. 3.1 roadmiles E of Ciudad Mante (measured from circle in southern Mante where the Tampico, Mante, and Valles roads diverge)
