Unionidae Fleming, 1828
Toxolasma corvunculus (I. Lea, 1868)
Toxolasma cylindrellus (I. Lea, 1868)
Toxolasma lividus (Rafinesque, 1831)
Toxolasma mearnsi (Simpson, 1900)
Toxolasma parvus (Barnes, 1823)
Toxolasma paulus (I. Lea, 1840)
Toxolasma pullus (Conrad, 1838)
Toxolasma texasensis (Lea, 1857)
Toxolasma texasiensis (I. Lea, 1857)
