Anthozoa - Stauriida - Columnaxonidae
Parent taxon: Stauriida according to J. Fedorowski and N. P. Vassilyuk 2011
Sister taxa: Arachnophyllina, Aulophyllina, Calostylina, Caniniina, Columnariina, Cyathophyllina, Diffingiina, Heritschioides hammani, Ketophyllina, Kleopatrinidae, Lithostrotionina, Lomaphyllum, Lonsdaleiina, Lophophyllidiidae, Lophotichiidae, Lycophyllina, Mccloudius parvus, Metriophyllina, Mictocystoides, Nanophyllum, Paraceriaster, Petalaxidae, Petraphyllidae, Plerophyllina, Ptenophyllina, Romanophyllidae, Stauriina, Stereolasmatina, Streptelasmatina, Tachylasmatina, Yatsengiidae
Subtaxa: Columnaxon
Ecology: stationary epifaunal suspension feeder
Distribution: found only at Corals of Caparo Formation, Unit IV (Silurian of Venezuela)