Zooplankton of the South Atlantic Ocean
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Zooplankton of the South Atlantic Ocean
Key: Step 255. Subclass Limnomedusae

With or without centripetal canals; internal statocysts; simple, unbranched radial canals; gonads on radial canals; without ocelli.

Step 256

Without statocysts or ocelli; without centripetal canals; manubrium usually with 4-6 or more radial gastric lobes extending along proximal portions of radial canals; with gonads surrounding manubrium and usually extending onto gastric lobes; radial canals generally branched, obliterated canals may be present.

Step 264
Decision path