Order Isoetales Prantl 1874 (ferns)

Lycopsida - Isoetales

Parent taxon: Lycopsida according to P. Kenrick and P.R. Crane 1997

See also Hickey 1977, Lapasha and Miller 1985 and Taylor et al. 2008

Sister taxa: Foveotriletes, Isoetaceae, Kraeuselisporites, Leptolepidites, Lycopodiaceae, Lycopodiales, Lycospora, Planisporites, Reticulisporites, Selaginellaceae, Selaginellales, Styxisporites, Uvaesporites, Zebrasporites

Subtaxa: Chaloneriaceae Minerisporites Pleuromeiaceae

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Distribution:

• Paleocene to Eocene of Belgium (3 collections), the Netherlands (3)

• Paleocene of United States (1: Montana)

• Cretaceous of Argentina (6), Australia (24), Canada (95: Alberta, British Columbia, Northwest Territories, Nunavut, Yukon Territories, Yukon Territory), China (8), Denmark (2), India (10), Poland (2), the United Kingdom (5), United States (48: Iowa, Kansas, Minnesota, Montana, Nebraska, Wyoming)

• Jurassic of Denmark (1)

• Triassic of Argentina (1), China (13), France (2), Germany (13), Japan (1), the Russian Federation (12), Spain (1), Tajikistan (1)

Total: 252 collections including 318 occurrences

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