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Total: 39

genus unavailable

Genus Pecopteridium Fontaine, I.C. White Sec. Geol. Surv. Pennsylvania Rept. Progr., PP: 61. Jun 1880

genus unavailable

Genus Nematophyllum Fontaine, I.C. White Sec. Geol. Surv. Pennsylvania Rept. Progr., PP: 35. Jun 1880

genus valid

Genus Saportaea Fontaine, I.C. White Sec. Geol. Surv. Pennsylvania Rept. Progr., PP: 99. Jun 1880

genus unavailable

Genus Acrostichides Fontaine Monogr. U.S. Geol. Surv., 1883, 6: 24. Jul - Aug 1884

genus valid

Genus Pseudodanaeopsis Fontaine Monogr. U.S. Geol. Surv., 1883, 6: 58. Jul - Aug 1884

genus valid

Genus Mertensides Fontaine Monogr. U.S. Geol. Surv., 1883, 6: 35. Jul - Aug 1884

genus valid

Genus Tysonia Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 186. Nov 1889

genus valid

Genus Eucalyptophyllum Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 325. Nov 1889

genus valid

Genus Baieropsis Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 250. Nov 1889

genus valid

Genus Acaciaephyllum Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 279. Nov 1889

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