†order Paleosiphonocladales (green algae)
Chlorophyceae - Paleosiphonocladales
Parent taxon: Chlorophyceae according to W. Kiessling 2003
Sister taxa: Anatoliporaceae, Chaetophorales, Chlorococcales, Chlorotylites, Chuvashovia, Dascladales, Dasycladales, Euglena, Hungarodiscus, Hydrodictyaceae, Larvaria, Noremia, Pediastrites, Pediastrum, Pleurozonaria, Receptaculitidae, Scenedesmaceae, Tetrasporales, Ulothrix, Volvocales
Subtaxa: Donezellidae
Ecology: stationary epifaunal "photoautotroph"
Distribution:
• Permian of Tajikistan (1 collection)
• Carboniferous of Algeria (4), Japan (1), the Russian Federation (1), Spain (4), Ukraine (1), United States (2: Oklahoma, Texas)
• Devonian of Belgium (1)
Total: 15 collections including 17 occurrences