Stauromedusae are the stalked jellyfishes. They are the sole living members of the class Staurozoa, and belong to the medusozoa subphylum of Cnidaria. They are unique among medusa jellyfish in that they do not have an alternation of polyp and medusa life cycle phases but are instead interpreted as an attached medusa stage, with a life style more r...
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http://en.wikipedia.org/wiki/Stauromedusae
(from the article `jellyfish`) The fourth order, Stauromedusae, formerly called Lucernariida, comprises some 30 described species of nonswimming, stalked jellies. These species ... ...Most species in warm, coastal waters, a few in frigid waters; some oceanic. Includes the giant Cyanea arctica, which may attain 2 m in ... [2 related a...
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http://www.britannica.com/eb/a-z/s/156
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