Polypodiopsida - Equisetales - Equisetidae
Parent taxon: Equisetales according to R. N. Lakhanpal et al. 1976
Sister taxa: Angaroradix, Annularia, Annulariopsis, Annulina, Archaeocalamitaceae, Barakaria, Borisiella, Calamitaceae, Corynophyllites, Equisetaceae, Equisetophyton, Manchurostachys, Neokoretrophyllites, Notocalamites, Oncylogonatum, Phyllostachya, Protannularia, Protocalamostachys, Pseudoannularia, Pseudoasterophyllites, Pseudolobatannularia, Raniganjia, Schizoneuropsis
Subtaxa: Giridia Lelstotheca Phyllotheca
Ecology: "photoautotroph"
Distribution:
• Jurassic of China (3 collections), Italy (1), Kazakhstan (1), Mongolia (1), Poland (1), the Russian Federation (3)
• Triassic of Argentina (1), Australia (2), China (4), India (1), Japan (2), Kazakhstan (1), Mexico (20), the Russian Federation (4)
• Permian to Triassic of South Africa (12)
• Permian of Antarctica (5), Argentina (4), Australia (28), Brazil (11), China (9), the Congo-Kinshasa (1), Falkland Islands (Malvinas) (1), India (37), Madagascar (1), Mongolia (11), North Korea (2), the Russian Federation (64), South Africa (11), South Korea (1), Spain (1), Tanzania (2), Zambia (1), Zimbabwe (4)
Total: 251 collections including 314 occurrences