Gymnophthalmata

• (n. pl.) A group of acalephs, including the naked-eyed medusae; the hydromedusae. Most of them are known to be the free-swimming progeny (gonophores) of hydroids.
Found on http://thinkexist.com/dictionary/meaning/gymnophthalmata/

Gymnophthalmata

Gym`noph·thal'ma·ta (- nŏf*thăl'mȧ*tȧ) noun plural [ New Latin , from Greek gymno`s naked + 'ofqalmo`s the eye.] (Zoology) A group of acalephs, including the naked-eyed medusæ; the hydromedusæ. Most of them are known to be the free-swimmin...
Found on http://www.encyclo.co.uk/webster/G/70
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