Psilophytopsida - Psilophytales - Psilophytaceae
Parent taxon: Psilophytales according to A. B. Doweld 2001
Sister taxa: Arachnoxylon, Barsassia, Cooksonia, Dicranophyton, Distichophytum, Dutoitia, Gilboaphyton, Gosslingia, Legrandia, Lerichea, Loganiella, Loganophyton, Niayssioidea, Orestovia, Paulophyton, Pseudosporochnus, Rhynia, Sacheocladus, Trimerophytaceae, Wattieza, Uralia
Subtaxa: Psilophyton
Distribution:
• Carboniferous of Canada (2: New Brunswick collections)
• Devonian of Belgium (17), Canada (26: New Brunswick, Ontario, Quebec), China (2), Colombia (1), the Czech Republic (8), France (2), Germany (4), Norway (6), the Russian Federation (3), United States (9: Alaska, Maine, New York, Wyoming)
Total: 80 collections including 97 occurrences