Class Dasycladophyceae (green alga)
Parent taxon: Chlorophyta according to S. Berger 2006
Sister taxa: Bryopsidophyceae, Chlorophyceae, Monostysisyrinaceae, Pseudopalaeoporella, Sinophyllum, Sphaeroporella, Thaumatoporellales
Subtaxa: Dasycladales, Palaeoberesellidae, Radiosphaeroporella
Ecology: stationary epifaunal "photoautotroph"