Hyolithomorpha

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

Sister taxa: Attenuella, Hyolithida, Orthothecida, Orthothecimorpha

Subtaxa: Calcitheca Dilites Eumorpholites Nervolites Ovalitheca Parahyolithes Sulcavitida Toxeumorphorida

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Ecology: stationary epifaunal suspension feeder

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