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Hydrocephalus Barrande 1846 (trilobite)

Trilobita - Paradoxididae

Synonym: Rejkocephalus Kordule 1990

Parent taxon: Paradoxididae according to H. B. Whittington et al. 1997

Sister taxa: Acadoparadoxides, Paradoxides

Subtaxa: none

Ecology: fast-moving low-level epifaunal carnivore