Hormogoneae - Nostocales - Rivulariaceae
Parent taxon: Nostocales according to Kundal 2010
See also Dragastan et al. 1999 and Schopf and Blacic 1971
Sister taxa: Nostocaceae, Scytonemataceae
Subtaxa: Aldanella Azyrtalia Caudiculophycus Celyphus Gloeotrichia Panomniella Primorivularia Rivularia Spongiostroma
Ecology: stationary "photoautotroph"
Distribution:
• Cretaceous of Chile (1 collection), Romania (6), South Sudan (1), the United Kingdom (1)
• Jurassic to Cretaceous of Austria (1)
• Triassic of Greece (3), Oman (1), Slovenia (1)
• Devonian of China (1), the Russian Federation (1)
• Ordovician of Canada (2: Quebec), China (1), Norway (1), Sweden (1), United States (2: Tennessee)
• Tonian of Australia (2), Canada (3: Yukon), the Russian Federation (1)
• Statherian of India (1)
Total: 31 collections including 40 occurrences