Lycopodiopsida - Isoetales - Isoetaceae
Full reference: B. C. Dumortier. 1829. Analyse des Familles des Plantes, avec l’indication des principaux genres qui s’y rattachent
Parent taxon: Isoetales according to PPG. I 2016
See also Hickey 1977, Knowlton 1919, Mabberley 2000, McIver and Basinger 1993, Prantl 1874 and Taylor et al. 2008
Sister taxa: Chaloneriaceae, Isoetodendron, Minerisporites, Paralycopodites, Pleuromeiaceae
Subtaxa: Echinosporis Isoetes Isoetites Isoetopsis Nathorstianella
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 of Argentina (3), Canada (1: Saskatchewan), United States (7: Colorado, Montana, New Mexico, North Dakota, Wyoming)
• Cretaceous to Paleogene of Antarctica (1), New Zealand (3)
• Cretaceous of Antarctica (2), Argentina (5), Australia (5), India (6), Portugal (1), the United Kingdom (1)
• Jurassic of India (5), United States (2: Colorado, Oregon/Idaho)
• Triassic of Italy (1)
Total: 78 collections including 82 occurrences