Species

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Total: 95

species valid

Phyllites mascallensis C.A. Arnold Contr. Mus. Paleontol. Univ. Michigan, 5(8): 100. 30 Oct 1937

species valid

Physostoma winchellii C.A. Arnold Bull. Torrey Bot. Club, 75(2): 135. 10 Mar 1948

species valid

Prolepidodendron breviinternodium (C.A. Arnold) C.A. Arnold Contr. Mus. Paleontol. Univ. Michigan, 5(11): 278. 1 Jul 1939

species valid

Protosalvinia furcata (Dawson) C.A. Arnold Svensk Bot. Tidskr., 48(2): 292, 294. 30 Jun 1954

species valid

Pseudotsuga taxifolioidea C.A. Arnold J. Washington Acad. Sci., 25(8): 378. 15 Aug 1935

species valid

Pyrus mackenziei C.A. Arnold Contr. Mus. Paleontol. Univ. Michigan, 5(8): 93. 30 Oct 1937

species valid

Reimannia aldenensis C.A. Arnold Bull. Buffalo Soc. Nat. Sci., 17(1): 5. 1935

species valid

Rhus diluvialis C.A. Arnold Contr. Mus. Paleontol. Univ. Michigan, 5(8): 93. 30 Oct 1937

species valid

Rotodontiospermum illinoense C.A. Arnold, Steidtmann Amer. J. Bot., 24(9): 647, 649. 15 Nov 1937

species valid

Samaropsis hesperia C.A. Arnold Contr. Mus. Paleontol. Univ. Michigan, 6(4): 64. 1 Oct 1941

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