Ostreida (Ostreoida) is an order of mussels. There are 276 species of Ostreoida, in 53 genera and 9 families. This order has been around since the ordovician period. It includes groups like Pterineidae. Dead Ostreoida form shallow marine sediments. They have sexual reproduction. They are sessile animals.
EOL has data for 14 attributes, including: