Species

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Total: 28

species valid

Premnoxylon iowense R.L. Pierce, J.W. Hall Phytomorphology, 3(4): 389. Dec 1953

species valid

Costatheca dakotaensis (Schemel) J.W. Hall J. Paleontol., 41(5): 1298. 22 Sep 1967

species valid

Costatheca lata (Vangerow) J.W. Hall J. Paleontol., 41(5): 1298. 22 Sep 1967

species valid

Costatheca striata (Dijkstra) J.W. Hall J. Paleontol., 41(5): 1298. 22 Sep 1967

species valid

Costatheca tenuis (Dijkstra) J.W. Hall J. Paleontol., 41(5): 1298. 22 Sep 1967

species valid

Costatheca dentata (Dijkstra) J.W. Hall J. Paleontol., 41(5): 1298. 22 Sep 1967

species valid

Costatheca exilis (Vangerow) J.W. Hall J. Paleontol., 41(5): 1298. 22 Sep 1967

species valid

Costatheca subreticulata (Dijkstra) J.W. Hall J. Paleontol., 41(5): 1298. 22 Sep 1967

species valid

Costatheca diskoensis (E.L. Miner) J.W. Hall J. Paleontol., 41(5): 1298. 22 Sep 1967

species valid

Costatheca laevis (Vangerow) J.W. Hall J. Paleontol., 41(5): 1298. 22 Sep 1967

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