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Tubipora :: Tubipora (n.) A genus of halcyonoids in which the skeleton, or coral (called organ-pipe coral), consists of a mass of parallel cylindrical tubes united at intervals by transverse plates. These corals are usually red or purple and form large masses. They are natives of the tropical parts of the Indian and Pacific Oceans..

Pennatulacea :: Pennatulacea (n. pl.) A division of alcyonoid corals, including the seapens and related kinds. They are able to move about by means of the hollow muscular peduncle, which also serves to support them upright in the mud. See Pennatula, and Illust. under Alcyonaria..

Alcyonoid :: Alcyonoid (a.) Like or pertaining to the Alcyonaria.

Halcyonold :: Halcyonold (a. & n.) See Alcyonoid.

Alcyonoid :: Alcyonoid (n.) A zoophyte of the order Alcyonaria.

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