Full reference: K. A. E. Prantl. 1874. Lehrbuch der Botanik: für Mittelschulen.
Parent taxon: Lycopodiopsida according to PPG. I 2016
See also Hickey 1977, Kenrick and Crane 1997, Knowlton 1919, Lapasha and Miller 1985, Prantl 1874, Taylor et al. 2008 and Vallati et al. 2020
Sister taxa: Foveolatitriletes, Lycopodiales, Selaginellales
Subtaxa: Chaloneriaceae Isoetaceae Isoetodendron Minerisporites Paralycopodites Pleuromeiaceae
Distribution:
• Quaternary of Australia (21 collections), Canada (2: Ontario), the United Kingdom (1), United States (1: North Carolina)
• Miocene to Pliocene of Bolivia (1)
• Miocene of Argentina (1)
• Oligocene to Miocene of Argentina (1), Australia (1)
• Oligocene of United States (1: Montana)
• Eocene of United States (4: North Dakota)
• Clarkforkian of United States (1: Wyoming)
• Paleocene to Eocene of Belgium (3), the Netherlands (3)
• Paleocene of Argentina (3), Canada (1: Saskatchewan), United States (8: Colorado, Montana, New Mexico, North Dakota, Wyoming)
• Cretaceous to Paleogene of Antarctica (1), New Zealand (3)
• Cretaceous of Antarctica (2), Argentina (11), Australia (29), Canada (95: Alberta, British Columbia, Northwest Territories, Nunavut, Yukon Territories, Yukon Territory), China (8), Denmark (2), India (12), Poland (2), Portugal (1), the United Kingdom (5), United States (48: Iowa, Kansas, Minnesota, Montana, Nebraska, Wyoming)
• Jurassic of Denmark (1), India (5), United States (2: Colorado, Oregon/Idaho)
• Triassic of Argentina (1), Australia (2), China (13), France (2), Germany (13), Italy (1), Japan (1), the Russian Federation (13), Spain (1), Tajikistan (1), United States (1: Virginia)
• Carboniferous of Germany (1), the United Kingdom (8), United States (11: Indiana, Kentucky)
Total: 349 collections including 429 occurrences