Hormogoneae - Oscillatoriales - Oscillatoriaceae
Parent taxon: Oscillatoriales according to V. N. Sergeev et al. 1995
See also Beukes et al. 1987, Hofmann 1976, Horodyski and Donaldson 1980, Knoll and Golubic 1979, Oehler 1978 and Schopf and Blacic 1971
Sister taxon: Girvanellaceae
Subtaxa: Allantomorphus Archaeonema Calyptothrix Cephalophytarion Circulinema Contortothrix Cyanonema Eomicrocoleus Eomycetopsis Filiconstrictosus Halythrix Heliconema Obconicophycus Obruchevella Oscillatoriopsis Palaeolyngbya Palaeoscytonema Palaeotubulus Partitiofilum Tenuofilum
Ecology: stationary "photoautotroph"
Distribution:
• Ordovician of China (1 collection)
• Cambrian of Australia (1), Canada (1: British Columbia), China (4), the Russian Federation (1), Turkey (1)
• Ediacaran of China (1), Estonia (2), Greenland (1), Mongolia (1), Namibia (1)
• Tonian of Australia (3), Canada (7: Yukon), the Congo-Kinshasa (2), India (1), the Russian Federation (1)
• Stenian of Canada (2: Nunavut)
• Ectasian of Canada (1: Nunavut), United States (1: Texas)
• Calymmian of Australia (1), China (3), the Russian Federation (11), United States (1: Montana)
• Mesoproterozoic of Canada (1: Nunavut)
• Statherian of Australia (4), India (2)
• Orosirian of Australia (1), Canada (4: Nunavut)
Total: 61 collections including 156 occurrences