Infrageneric

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Total: 354

infragenus valid

Triletes Section Aphanozonati Schopf Rept. Invest. Illinois Geol. Surv., (50): 24. 1 Jul 1938

infragenus valid

Filicites Subgenus Hymenopteris Stokes, Webb Trans. Geol. Soc. (London), Ser. 2, 1(2): 424. 17 Dec 1824

infragenus valid

Fucoides Section Caulerpites Brongn. Hist. Vég. Foss., 2(15): 72. Apr - Dec 1838

infragenus valid

Sphenophyllum Subgenus Tikhvinskia Esaulova Paleontol. Zhurn., 1987, (1): 105. 13 Mar 1987

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