Uniomerus carolinianus (Bosc, 1801) Florida Pondhorn Juvenile (on the right)

Elliptio species Juvenile (on the left)

    Netted in Big Davis Creek along US-1 just southeast of Energy Center Drive (GPS: 30.0979N 081.3132W), Jacksonville, Duval County, Florida 11/29/2016. Elliptio: angulate oblique (non-commarginal) ridges, and Uniomerus carolinianus: squared-off commarginals