Clionoidea is a superfamily of Gastropoda. There are 54 species of Clionoidea, in 17 genera and 4 families. It includes groups like Notobranchaeidae, Cliopsidae, and Sea Angels. Dead Clionoidea form deep marine sediments. Dead Clionoidea form shallow marine sediments. They have sexual reproduction.
EOL has data for 5 attributes, including: