Zooplankton of the South Atlantic Ocean
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Zooplankton of the South Atlantic Ocean
Key: Step 284. Subclass Trachymedusae

Numerous tentacles arranged in groups; most with adhesive disks; manubrium with 8 radial lobes (this diagnosis excludes the genus Tesserogastria, not present in South Atlantic).

Ptychogastria polaris

Tentacles without adhesive disks.

Step 285
Decision path