Debrenne F, Zhuravlev AY, Kruse PD. Treatise Online no.56: Part E, Revised, Volume 4, Chapter 20C: Archaeocyatha and Cribricyatha nomina nuda; Taxa not Archaeocyatha, Radiocyatha, or Cribricyatha. TREON. Published online February 1, 2012. doi:10.17161/to.v0i0.4429