Scleractinia

Order of coelenterates, usually producing calcareous skeletons with hexameral symmetry
Found on http://life.bio.sunysb.edu/marinebio/glossary.rs.html

Scleractinia

Scleractinia, also called stony corals, are marine corals that generate a hard skeleton. They first appeared in the Middle Triassic and descended from the tabulate and rugose corals that barely survived the end of the Permian. Much of the framework of modern coral reefs is formed by scleractinians. Stony corals numbers are expected to decline due ...
Found on http://en.wikipedia.org/wiki/Scleractinia

Scleractinia

Order of coelenterates, usually producing calcareous skeletons with hexameral symmetry
Found on http://www.superglossary.com/Glossary/Science/Marine_Biology/
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