Cycadopsida - Trigonocarpales - Neuropteridae
Parent taxon: Medullosales according to W. Zhou et al. 2017
See also Dilcher et al. 2005
Sister taxa: Sarcospermum, Trigonocarpaceae, Trigonocarpolithus, Angiospermophyton, Alethopteridaceae
Subtaxa: Casea Cyclopteris Daubreeia Fryopsis Linopteris Nephropteris Neuralethopteris Neurocardiopteris Neurodontopteris Neurogangamopteris Neuropterocarpus Neurospermum Nevrospermum Otopteris Padgettia Pseudocyclopteris
Ecology: stationary C3 autotroph
Distribution:
• Jurassic of India (1 collection), Italy (1)
• Triassic of Germany (1), India (1), United States (1: North Carolina)
• Permian of China (5), Czechia (1), France (4), Germany (6), Italy (1), Morocco (2), Portugal (1), United States (6: Arizona, Colorado, Kansas, Texas)
• Namurian of Türkiye (2)
• Carboniferous to Permian of Spain (1)
• Carboniferous of Brazil (1), Canada (9: New Brunswick, Nova Scotia), France (1), Germany (2), Peru (1), Portugal (3), Spain (10), Ukraine (1), United States (50: Alabama, Alaska, Arizona, Colorado, Georgia, Illinois, Indiana, Kansas, Missouri, New Mexico, Ohio, Oklahoma, Pennsylvania, Utah, West Virginia)
• Devonian of Canada (1: Quebec)
Total: 113 collections including 174 occurrences