Full reference: W. I. Ausich and D. L. Meyer. 1988. Blastoids from the late Osagean Fort Payne Formation (Kentucky and Tennessee). Journal of Paleontology 62(2):269-283
Parent taxon: Spiraculata according to J. J. Sepkoski 2002
Sister taxa: Acentrotremites, Ambolostoma, Arcuoblastus, Auloblastus, Belocrinus, Calycoblastus, Carpenteroblastus, Conuloblastus, Cordyloblastus, Costatoblastus, Cribroblastus, Cryptoblastus, Decemoblastus, Deliablastus, Dentiblastus, Devonoblastus, Diploblastus, Doryblastus, Elaeacrinus, Eleutherocrinus, Ellipticoblastus, Globoblastus, Gongyloblastus, Granatocrinus, Heteroblastus, Houiblastus, Iranoblastus, Kadiskoblastus, Lophoblastus, Malchiblastus, Metablastus, Monadoblastus, Monoblastus, Monoschizablastus, Montanablastus, Nodoblastus, Nucleocrinus, Orbiblastus, Orbitremites, Pentephyllum, Pentremitidae, Pentremoblastus, Perittoblastus, Placoblastus, Poroblastus, Ptychoblastus, Pyramiblastus, Schizoblastidae, Schizoblastus, Schizotremites, Sinopetaloblastus, Strongyloblastus, Tanablastus, Tricoelocrinus, Troosticrinus, Uyguroblastus, Xinjiangoblastus, Xyeleblastus
Subtaxa: Euryoblastus veryi
Ecology: stationary intermediate-level epifaunal suspension feeder