Cystoporata is an extinct order of Paleozoic bryozoans. Their fossils are found from Ordovician to Permian strata. All cystoporatan bryozoan genera (around 50 or so) have a `cystopore,` a chamber-like supporting structure, separated from each other by transverse septa, situated between the characteristically elongated zooecias of each individual.....
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http://en.wikipedia.org/wiki/Cystoporata
(from the article `moss animal`) ...by open pores; sexual reproduction involves polyembryony, usually in special reproductive zooids; all seas; Ordovician to present; about 250 ... ...About 550 genera of stenolaemates have been described. Only one of the four orders that make up the class, the Cyclostomata, is represented by ... [2 r...
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http://www.britannica.com/eb/a-z/c/176
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