Century Dictionary and Cyclopedia
- A family of aporose selerodermatous stone-corals, of the order Sclerodermata, class Actinozoa; the star-corals: so called from the radiated or star-like arrangement of their tentacles. The family is a large and important one, containing several genera, the animals of which largely contribute to the formation of coral reefs. Its limits vary with different authors. Also spelled
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