Species

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Total: 68

species valid

Zosterophyllum myretonianum Penh. Canad. Rec. Sci., 5(1): 12. Jan 1892

species valid

Viburnum ovatum Penh. Proc. & Trans. Roy. Soc. Canada, Series 2, 8(Section 4): 62. 1902

species valid

Ulmus protoracemosa Penh. Proc. & Trans. Roy. Soc. Canada, Series 3, 1(Section 4): 297. 1907

species valid

Ulmus protoamericana Penh. Proc. & Trans. Roy. Soc. Canada, Series 3, 1(Section 4): 298. 1907

species unavailable

Ulmus columbiensis Penh. Geol. Surv. Branch Dept. Mines Canada, (1013): 93. 8 Jun 1908

species valid

Ulmus columbiana Penh. Proc. & Trans. Roy. Soc. Canada, Series 3, 1(Section 4): 299. 1907

species valid

Taxodium laramianum Penh. Proc. & Trans. Roy. Soc. Canada, Series 2, 10(Section 4): 57. 1904

species valid

Sphenozamites oblanceolatus Penh. Geol. Surv. Branch Dept. Mines Canada, (1013): 90. 8 Jun 1908

species valid

Sequoia burgessii Penh. Proc. & Trans. Roy. Soc. Canada, Series 2, 9(Section 4): 42. 1903

species valid

Sequoia albertensis Penh. Ottawa Naturalist, 22(4): 83. Jul 1908

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