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Found as shown, nestled together on the underside of a piece of limestone.

Collected dead by a friend in the sandy part of a river. See the tag.

Collected dead by a friend in the sandy part of a river. See the tag

sensu lato
A young clam that survived through an injury when it was even younger. Photos 1-2 show this through a loupe.

sensu lato
Collected by a friend in the sandy part of a river. This one also has an interior similar to C. leana with the purple lateral teeth but it’s more faded in this one.

sensu lato
Collected by a friend in the sandy part of a river.

sensu lato
Collected by a friend in the sandy part of a river. The interior looks similar to some specimens of C. leana

sensu lato
Collected by a friend in the sandy part of a river.

There was at least one alive in the creek as well!

Based on the blade-like pseudocardinal teeth. These seem a little heftier than usual for ohiensis, but the teeth of P. alatus would be much more triangular.

Green River, Kentucky.

Columbia River bank. The shells were very thin (as with most Anodonta) and hardly inflated at all.