Infrageneric

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Total: 3

infragenus valid

Cordaites Unranked Pseudo-Cordaites Heer Fl. Foss. Helvet. ed. 1876, (1): 56. 31 Dec 1875

infragenus valid

Gleichenia Subgenus Didymosorus (Debey, Ettingsh.) Heer Kongl. Svenska Vetensk. Acad. Handl., Neue Folge, 12(6): 49. 30 Dec 1874

infragenus valid

Palmacites Unranked Fasciculites (Cotta) Heer Fl. Tert. Helv., 1(3): 94. 20 Jun 1855