Photo of a spothanded crayfish viewed from above on white background.

    Crayfishes

    About 36 species in Missouri
    Photo of a devil crayfish.

    Devil Crayfish

    Lacunicambarus aff. diogenes
    Monkey Face Mussel

    Freshwater Mussels

    Bivalve molluscs in order Unionoida
    round pigtoe

    Round Pigtoe

    Pleurobema sintoxia