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Hydroidolina is a subclass of Hydrozoa and makes up 90% of the class. Controversy surrounds who the sister groups of Hydroidolina are, but research has shown that three orders remain consistent as direct relatives: Siphonophorae, Anthoathecata, and Leptothecata.
Description and background, Taxonomy & Distribution
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siphonophorae benthic medusa polyp subclass species within polyps organisms exoskeleton hydrozoans anthoathecata leptothecata leptolinae class contains two environments colonial often
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Hydroidolina | is a | subclass of Hydrozoa and makes up 90 | 0.90 | text |
| Hydroidolina | is a | presence and formation of an exoskeleton | 0.90 | text |
| deepwater caves or brackish | instance of | Subclass HydroidolinaOrder AnthoathecataOrder LeptothecataOrder Siphonophorae DistributionHydroidolina are commonly found in a variety of marine environments across the world | 0.80 | text |
| fresh shallow waters | instance of | Subclass HydroidolinaOrder AnthoathecataOrder LeptothecataOrder Siphonophorae DistributionHydroidolina are commonly found in a variety of marine environments across the world | 0.80 | text |
| and can exist as solitary or colonial | instance of | Subclass HydroidolinaOrder AnthoathecataOrder LeptothecataOrder Siphonophorae DistributionHydroidolina are commonly found in a variety of marine environments across the world | 0.80 | text |
| fish | instance of | Many of them live on other organisms | 0.80 | text |
| tunicates | instance of | Many of them live on other organisms | 0.80 | text |
| algae | instance of | Many of them live on other organisms | 0.80 | text |
| and crustaceans | instance of | Many of them live on other organisms | 0.80 | text |
| desmocytes and | instance of | The exoskeleton contains anchoring structures | 0.80 | text |
| Hydroidolina | related to Alternate classifications | Other | 0.60 | section |
| Hydroidolina | related to Alternate classifications | They | 0.60 | section |
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