†class 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
Ecology: stationary epifaunal suspension feeder