Species

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Total: 18

species valid

Tinsleya texana Mamay Profess. Pap. U.S. Geol. Surv., 523(E): 10. Oct 1966

species valid

Scolecopteris major Mamay Ann. Missouri Bot. Gard., 37(3): 436. 30 Sep 1950

species valid

Scolecopteris iowensis Mamay Ann. Missouri Bot. Gard., 37(3): 429. 30 Sep 1950

species valid

Scolecopteris incisifolia Mamay Ann. Missouri Bot. Gard., 37(3): 433. 30 Sep 1950

species valid

Phasmatocycas spectabilis Mamay Profess. Pap. U.S. Geol. Surv., 1976, (934): 22. Jun 1977

species valid

Phasmatocycas kansana Mamay J. Res. U.S. Geol. Surv., 1(6): 689. 30 Oct 1973

species valid

Phasmatocycas bridwellii Axsmith, Serbet, M. Krings, T.N. Taylor, Ed.L. Taylor, Mamay Amer. J. Bot., 90(11): 1587. 14 Nov 2003

species valid

Medullosa grandis H.N. Andrews, Mamay Ann. Missouri Bot. Gard., 40(3): 191. 30 Sep 1953

species valid

Eoangiopteris andrewsii Mamay Ann. Missouri Bot. Gard., 37(3): 440, 444. 30 Sep 1950

species valid

Cycadospadix yochelsonii Mamay Profess. Pap. U.S. Geol. Surv., 1976, (934): 24. Jun 1977

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