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Russell, 1953

Anthomedusae with subglobular umbrella, with slight apical process; manubrium short, cylindrical, not extending beyond umbrella margin; with gastric peduncle; mouth with 4 lips elongated to form either simple or branched oral arms armed with terminal and usually also lateral clusters of cnidocysts; 4 to 8 radial canals and circular canal; gonads completely surrounding manubrium; 8 groups of solid marginal tentacles; without ocelli.

Genus Rathkea

Family Rathkeidae