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Family Halammohydridae
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Order
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Class
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Hydrozoa
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No. of Genera in Ref.
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1
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No. of Species in Ref.
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9
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Environment
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Fresh : No |
Brackish : No |
Marine : Yes
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Aquarium
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First Fossil Record
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Remark
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Actinulidae consiting in a long gastric tube and a small aboral cone joined by a neck-like part; aboral cone with an adhesive organ; the manubrium ends blindly close behind the neck and opens orally through the mouth; with an aboral nerve ring; with two aboral whorls of amphicoronate solid tentacles and an alternating ring of ecto-endodermic statocysts; gonochoristic; without brood pouch (=subumbrellar cavity; Ref. 3134, p. 56).
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Etymology
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Division
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Reproductive guild
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Typical activity level
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Main Ref.
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Coordinator
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