Species

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Total: 362

species valid

Sphenopteris munda Dawson Canad. Naturalist Geol., 1863, 8(6): 444. 30 Jan 1864

species valid

Sphenopteris pilosa Dawson Acad. Geol. ed. 2 552. 15-30 May 1868

species valid

Sphenopteris recurva Dawson Quart. J. Geol. Soc. London, 19(4 [76]): 464. 1 Nov 1863

species valid

Sphenopteris splendens Dawson Fossil Pl. Devon. Canada 53. 4 Dec 1871

species valid

Spirodela scutata Dawson Rept. Geol. Res. 49th Parallel 329. 1875

species unavailable

Spirophyton brasiliense Dawson Quart. J. Geol. Soc. London, Part I, 37(146): 303. May 1881

species valid

Sporangites acuminatus Dawson Fossil Pl. Devon. Canada 63. 4 Dec 1871

species unavailable

Sporangites bilobatus Dawson Proc. Amer. Assoc. Advancem. Sci., 1883, 32: 262. 1884

species valid

Sporangites bilobatus Dawson ex J.M. Clarke Amer. J. Sci., Series 3, 29(172): 287. Apr 1885

species valid

Sporangites braziliensis Dawson ex J.M. Clarke Amer. J. Sci., Series 3, 29(172): 288. Apr 1885

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