Scleractinia (Stony Corals) is a group of cnidarians. There are 1989 species of stony corals, in 304 genera and 40 families. This group has been around since the wordian age. They includes groups like Stylinidae, Calamophylliidae, and Guyniidae. Dead Stony Corals form shallow marine sediments. They had alternation of generations, asexual reproduction, and sexual reproduction. They were sessile animals.
EOL has data for 26 attributes, including: