USFWS Mountain Prairie:
Pink Papershell Mussel
USFWS Mountain Prairie:
Fragile Papershell Mussel
USFWS Mountain Prairie:
Mussel Bed Loaded with Mussels on the Bank of the Marais des Cygnes River
USFWS Mountain Prairie:
Pistolgrip Mussel
USFWS Mountain Prairie:
Butterfly Mussel
USFWS Mountain Prairie:
Marais des Cygnes River Mussel Group
USFWS Mountain Prairie:
Mussel Species Survey Marais des Cygnes National Wildlife Refuge 2011
USFWS Mountain Prairie:
Mussel Collection in SD's James River
USFWS Mountain Prairie:
Threeridge Mussel (Amblema plicata)
USFWS Mountain Prairie:
Mussel Collection in SD's James River
USFWS Mountain Prairie:
Pink Heelsplitter Mussel (Potamilus alatus)
USFWS Mountain Prairie:
Mussel Collection in SD's James River
USFWS Mountain Prairie:
Mussel Collection in SD's James River
USFWS Mountain Prairie:
Freshwater Mussels at Gavins Point National Fish Hatchery