Trachylinae

__NOTOC__Taxobox
name = Trachylinae
regnum = Animalia
subregnum = Eumetazoa
phylum = Cnidaria
subphylum = Medusozoa
classis = Hydrozoa
subclassis = Trachylinae
subclassis_authority = Haeckel, 1879
subdivision_ranks = Orders
subdivision =
Actinulidae Swedmark & Teissier, 1958

Limnomedusae (but see text)

Narcomedusae Haeckel, 1879

Trachymedusae

synonyms =Trachylida
Trachylidae
Trachylina
Trachylinida

Trachylinae (also Trachylina, Trachylinida, etc) are a cnidarian subclass of the Hydrozoa. They are 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 [Schuchert (2005)]

The Freshwater Jelly ("Craspedacusta sowerbyi") is a well-known member of the Limnomedusae and might thus belong here.

Footnotes

References

* (2005): [http://www.ville-ge.ch/mhng/hydrozoa/hydrozoa-directory.htm The Hydrozoa Directory] - [http://www.ville-ge.ch/mhng/hydrozoa/intro/phylogeny.htm Hydrozoan Phylogeny and Classification] . Retrieved 2008-JUL-08.