Diagnosis
provided by World Register of Marine Species
Calycophorae with relatively large and usually rounded nectophores, containing large quantities of mesogloea; the larval nectophore sometimes retained during polygastric stage or may be replaced by one to four definitive nectophores, whose somatocysts are often complexly branched; the eudoxid bracts are rounded and unridged.
Schuchert, P.
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