
• (n. pl.) One of the orders of Pteropoda. They have no shell.
Found on
http://thinkexist.com/dictionary/meaning/gymnosomata/

(from the article `gastropod`) ...uncertain limits.Order ThecosomataShell present; pelagic ciliary feeders; no gill; 6 families.Order GymnosomataShell absent; no mantle cavity; ... Those that lack a shell and have complicated mechanisms for capturing and eating other small animals constitute the order Gymnosomata; those having a ... ...
Found on
http://www.britannica.com/eb/a-z/g/85
Gym`no·so'ma·ta (-sō'mȧ*tȧ or - sŏm'ȧ*tȧ)
noun plural [ New Latin , from Greek
gymno`s naked +
sw^ma ,
sw`matos , the body.]
(Zoology) One of the orders of Pteropoda. They have no shell.
Found on
http://www.encyclo.co.uk/webster/G/70
No exact match found.