†subclass Anthocerotidae Engler and Prantl 1893
Equisetopsida - Anthocerotidae - Anthocerotidae
Parent taxon: Equisetopsida according to M.W. Chase and J. L. Reveal 2009
Sister taxa: Bryidae, Chlamidostachys, Echinostachyales, Gondwanostachyales, Paraphyllanthoxylon, Pinidae, Sphenophyllales
Subtaxa: Foraminisporis
Distribution:
• Paleocene of Argentina (1 collection), Canada (1: Manitoba), India (1), United States (4: North Dakota)
• Cretaceous to Paleogene of Argentina (1)
• Cretaceous of Antarctica (4), Argentina (29), Australia (33), Canada (5: Alberta), Chile (7), China (1), Libya (1), North Atlantic (6), Peru (1), United States (14: Montana, North Dakota)
• Jurassic to Cretaceous of India (1)
• Jurassic of Tanzania (1)
Total: 111 collections including 154 occurrences