Phylactolaemata

Phylactolaemata is a class of the phylum Bryozoa whose members live only in freshwater environments. Like all bryozoans, they filter feed by means of an extensible `crown` of ciliated tentacles called a lophophore. They live in colonies, each of which consists of clones of the founding member. Unlike those of some marine bryozoans, phylactolaema.....
Found on http://en.wikipedia.org/wiki/Phylactolaemata

Phylactolaemata

• (n. pl.) An order of fresh-water Bryozoa in which the tentacles are arranged on a horseshoe-shaped lophophore, and the mouth is covered by an epistome. Called also Lophopoda, and hippocrepians.
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Phylactolaemata

(from the article `moss animal`) ...lophophore; excretory organs and a blood vascular system absent; each zooid secretes a rigid or gelatinous wall to support colony; over 4,000 ...
Found on http://www.britannica.com/eb/a-z/p/62
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