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Total: 38

genus unavailable

Genus Corylophyllum Dawson Geol. Hist. Pl. 197. 11-18 Feb 1888

genus valid

Genus Cycadeocarpus Dawson Rep. Progr. Geol. Survey Canada, 1872-1873 69. 1873

genus unavailable

Genus Davallites Dawson Proc. & Trans. Roy. Soc. Canada, 1(Section 4): 25. 1884

genus valid

Genus Leioderma Dawson Quart. J. Geol. Soc. London, Part I, 22(2=86): 129. 1 May 1866

genus valid

Genus Leptophloeum Dawson Quart. J. Geol. Soc. London, Part I, 18(72): 316. 1 Nov 1862

genus valid

Genus Leptophloeum Dawson in C.H. Hitchc. Rep. (Annual) Secr. Maine Board Agric., 1861, (6): 249. 1862

genus unavailable

Genus Nematophyton Dawson Geol. Hist. Pl. 21. 11-18 Feb 1888

genus unavailable

Genus Nematoxylon Dawson Quart. J. Geol. Soc. London, 19(4 [76]): 466. 1 Nov 1863

genus unavailable

Genus Nematoxylon Dawson Fossil Pl. Devon. Canada 20. 4 Dec 1871

genus valid

Genus Ormoxylon Dawson Fossil Pl. Devon. Canada 14. 4 Dec 1871

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