Clypeasteroida (Sand Dollars) is an order of echinoderms. There are 720 species of Sand Dollars, in 111 genera and 23 families. It includes groups like Oligopygidae, Plesiolampadidae, and Faujasiidae. Dead Sand Dollars form shallow marine sediments. They are bioturbators. They have sexual reproduction.
EOL has data for 7 attributes, including: