Parent taxon: Chlorophyta according to Barattolo 1991
Sister taxa: Amgaella, Bryopsidophyceae, Calathella, Caulerpites, Charophyceae, Chlorophyceae, Chuariophyceae, Dasycladophyceae, Doushantuophyton, Fuxianospira, Indopolia, Laenigma, Lanceoforma, Megaspirella, Microfasta, Monostysisyrinaceae, Palaeomastigocladus, Parallelphyton, Physophycus, Proterotainia, Pseudopalaeoporella, Retephycus, Schizosporis, Sgrossoella, Sinocylindra, Sinophyllum, Sphaeroporella, Spheroporella, Tetrasporaceae, Timanella, Ulvophyceae, Walcottophycus, Yakutina
Subtaxa: Thaumatoporella
Ecology: stationary epifaunal "photoautotroph"
Distribution:
• Eocene of Egypt (1 collection)
• Paleocene to Eocene of Greece (5)
• Paleocene of Greece (13), Slovenia (1)
• Cretaceous of Albania (2), Bulgaria (2), Croatia (5), France (7), India (2), Italy (89), Slovenia (6), Spain (3), Türkiye (1)
• Jurassic to Cretaceous of Austria (1), Japan (1)
• Jurassic of Algeria (2), Austria (3), Croatia (1), France (3), Greece (1), Indonesia (1), Italy (11), Morocco (2), Portugal (2), Romania (1), Slovenia (6), Spain (2), Switzerland (1), Thailand (1), Tunisia (1), Ukraine (1)
• Triassic of Austria (9), Germany (1), Greece (1), Hungary (2), Iran (3), Italy (5), Oman (1), Serbia (1), Slovakia (3), Spain (1), United States (1: Oregon)
Total: 206 collections including 208 occurrences