Hydrozoa - Hydroida

Parent taxon: Hydroida according to B. M. Waggoner and M. R. Langer 1993

Sister taxa: Archaeoantennularia, Archaeocryptolaria, Archaeolafoea, Archaeonectris, Cambrohydra, Clyxhydra, Crucimedusina, Discophyllum, Drevoella, Flexihydra, Inocaulis, Kristinella, Lafoeidae, Mazohydra, Mesokylix, Palaeacmea, Palaelophacmaea, Palaeokylix, Palaeonectris, Palaeotuba, Parleria, Philippinactinia, Plectodiscus, Pontifennia, Protohalecium, Protulophila, Psammactinia, Rhabdohydra, Sphenoecium, Thecata, Velubrella

Subtaxa: Campanulariidae, Hydrallmania

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Ecology: stationary epifaunal carnivore-suspension feeder