Unionoidea is a superfamily of bivalves. There are 530 species of Unionoidea, in 110 genera and 2 families. This superfamily has been around since the famennian age. It includes groups like Unionid Freshwater Mussels and Margaritiferidae. Dead Unionoidea form shallow marine sediments. They have sexual reproduction. They are facultatively mobile animals.
EOL has data for 10 attributes, including: