Trachylinae
Trachylinae (also Trachylina, Trachylinida, etc.) is a subclass of hydrozoans. It is placed at order rank in many older classifications, and limited to contain the Narcomedusae and Trachymedusae. But the Actinulidae, then considered an independent order, and probably also the Limnomedusae which were traditionally placed in the paraphyletic "Hydroida", belong to this group too. It is not entirely clear whether the Limnomedusae and the Trachymedusae as conventionally circumscribed are monophyletic[1]
| Trachylinae | |
|---|---|
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| Crossota sp. | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Hydrozoa |
| Subclass: | Trachylinae Haeckel, 1879 |
| Orders | |
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| Synonyms | |
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The freshwater jelly Craspedacusta sowerbyi is a well-known member of the Limnomedusae and might thus belong here.
Footnotes
- Schuchert (2005)
gollark: Okay, too bad, don't let them do much based on it I guess.
gollark: The "paradox" conflates "letting people say things you dislike" with "letting them act on it/ignoring it/not countering it sensibly/whatever else".
gollark: One definition of "tolerance": allowing people to say things.Another one: agreeing with what someone says or whatever, which isn't actually very similar.
gollark: > popper's paradox of toleranceI have never really agreed with this. It is strategically equivocating tolerance.
gollark: There are standards about illegally obtained evidence. This discourages people from going around obtaining evidence illegally.
References
- Schuchert, Peter (2005): The Hydrozoa Directory - Hydrozoan Phylogeny and Classification. Retrieved 2008-JUL-08.
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