| Taxonomic Range: |
| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Bougainvillidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Bougainvillia |
| Classification: |
| Rank Name: | Species |
| Rank Value: | macloviana |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Bougainvillidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Lizzia |
| Classification: |
| Rank Name: | Species |
| Rank Value: | blondina |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Bougainvillidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Nemopsis |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Bythotiaridae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Heterotiara |
| Classification: |
| Rank Name: | Species |
| Rank Value: | minor |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Bythotiaridae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Pseudotiara |
| Classification: |
| Rank Name: | Species |
| Rank Value: | tropica |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Corymorphidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Euphysa |
| Classification: |
| Rank Name: | Species |
| Rank Value: | aurata |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Corymorphidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Euphysilla |
| Classification: |
| Rank Name: | Species |
| Rank Value: | pyramidata |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Corymorphidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Euphysomma |
| Classification: |
| Rank Name: | Species |
| Rank Value: | brevia |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Corymorphidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Euphysora |
| Classification: |
| Rank Name: | Species |
| Rank Value: | furcata |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Corymorphidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Euphysora |
| Classification: |
| Rank Name: | Species |
| Rank Value: | gracilis |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Corynidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Diodonium |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Corynidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Dipurena |
| Classification: |
| Rank Name: | Species |
| Rank Value: | halterata |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Corynidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Dipurena |
| Classification: |
| Rank Name: | Species |
| Rank Value: | ophiogaster |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Eleutheriidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Staurocladia |
| Classification: |
| Rank Name: | Species |
| Rank Value: | vallentini |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Hydractiniidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Hydractinia |
| Classification: |
| Rank Name: | Species |
| Rank Value: | carnea |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Hydractiniidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Hydractinia |
| Classification: |
| Rank Name: | Species |
| Rank Value: | minuta |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Pandeidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Amphinema |
| Classification: |
| Rank Name: | Species |
| Rank Value: | dinema |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Pandeidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Amphinema |
| Classification: |
| Rank Name: | Species |
| Rank Value: | rugosum |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Pandeidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Leuckartiara |
| Classification: |
| Rank Name: | Species |
| Rank Value: | octona |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Pandeidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Urashimea |
| Classification: |
| Rank Name: | Species |
| Rank Value: | globosa |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Proboscidactylidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Proboscidactyla |
| Classification: |
| Rank Name: | Species |
| Rank Value: | halterata |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Proboscidactylidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Proboscidactyla |
| Classification: |
| Rank Name: | Species |
| Rank Value: | menoni |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Tubulariidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Ectopleura |
| Classification: |
| Rank Name: | Species |
| Rank Value: | dumortieri |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Anthoathecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Tubulariidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Hybocodon |
| Classification: |
| Rank Name: | Species |
| Rank Value: | unicus |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Leptomedusae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Eirenidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Eirene |
| Classification: |
| Rank Name: | Species |
| Rank Value: | menoni |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Leptothecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Campanulariidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Clytia |
| Classification: |
| Rank Name: | Species |
| Rank Value: | hemisphaerica |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Leptothecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Campanulariidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Clytia |
| Classification: |
| Rank Name: | Species |
| Rank Value: | simplex |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Leptothecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Campanulariidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Obelia |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Leptothecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Cirrholoveniidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Cirrholovenia |
| Classification: |
| Rank Name: | Species |
| Rank Value: | polynema |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Leptothecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Laodiceidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Staurodiscus |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Leptothecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Mitrocomidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Mitrocomella |
| Classification: |
| Rank Name: | Species |
| Rank Value: | grandis |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Leptothecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Mitrocomidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Mitrocomella |
| Classification: |
| Rank Name: | Species |
| Rank Value: | millardae |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Leptothecatae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Phialellidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Phialella |
| Classification: |
| Rank Name: | Species |
| Rank Value: | quadrata |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Narcomedusae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Aeginidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Solmundella |
| Classification: |
| Rank Name: | Species |
| Rank Value: | bitentaculata |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Trachymedusae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Geryoniidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Liriope |
| Classification: |
| Rank Name: | Species |
| Rank Value: | tetraphylla |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Trachymedusae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Rhopalonematidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Aglaura |
| Classification: |
| Rank Name: | Species |
| Rank Value: | hemistoma |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Trachymedusae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Rhopalonematidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Persa |
| Classification: |
| Rank Name: | Species |
| Rank Value: | incolorata |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Hydrozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Trachymedusae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Rhopalonematidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Rhopalonema |
| Classification: |
| Rank Name: | Species |
| Rank Value: | velatum |
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| Classification: |
| Rank Name: | Phylum |
| Rank Value: | Cnidaria |
| Classification: |
| Rank Name: | Class |
| Rank Value: | Scyphozoa |
| Classification: |
| Rank Name: | Order |
| Rank Value: | Semaeostomeae |
| Classification: |
| Rank Name: | Family |
| Rank Value: | Pelagiidae |
| Classification: |
| Rank Name: | Genus |
| Rank Value: | Chrysaora |
| Classification: |
| Rank Name: | Species |
| Rank Value: | hysoscella |
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