Four freshwater mussel valves (two complete specimens). The exteriors are brown to light brown in color. Deep growth lines, striations, and large nodules cover the exteriors. and a thick periostracum. The thick periostracum is beginning to flake on the umbos and nodules, due to wear. The interiors are an iridescent, silver to pink color. The oval shaped valves have deep muscle scars, large hinge teeth, squared posterior edges and rounded anterior edges. Shells 21-435.3 and 21-435.4 are covered in sand, giving them a moldy appearance.