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Total: 39

genus valid

Genus Nageiopsis Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 194. Nov 1889

genus unavailable

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

genus unavailable

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

genus valid

Genus Phyllocladopsis Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 204. Nov 1889

genus valid

Genus Platanophyllum Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 316. Nov 1889

genus unavailable

Genus Platypterygium (Schimp. in Schimp., Schenk) Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 168. Nov 1889

genus valid

Genus Populophyllum Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 311. Nov 1889

genus valid

Genus Proteaephyllum Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 281. Nov 1889

genus valid

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

genus valid

Genus Quercophyllum Fontaine Monogr. U.S. Geol. Surv., 15(1 [Text], 2 [Atlas]): 307. Nov 1889