Hyolitha

Parent taxon: Hyolitha according to J. J. Sepkoski 2002

Sister taxa: Hyolithida, Orthothecida, Orthothecimorpha

Subtaxa: Calcitheca, Dilites, Eumorpholites, Nervolites, Ovalitheca, Parahyolithes, Sulcavitida, Toxeumorphorida

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Ecology: stationary epifaunal suspension feeder