Trachylinae

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Trachylinae
Expl0393 - Flickr - NOAA Photo Library.jpg
Crossota sp.
Scientific classification e
Kingdom: Animalia
Phylum: Cnidaria
Class: Hydrozoa
Subclass: Trachylinae
Haeckel, 1879
Orders

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[1]

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

Footnotes[edit]

  1. ^ Schuchert (2005)

References[edit]