Descriptions of the species of Cycadeoidea, or fossil cycadean trunks, thus far determined from the Lower Cretaceous rim of the Black Hills

Lester F Ward

Published in Proceedings of The United States National Museum, in 1898, in volume 21, pages 195-229

Date published:1898

DOI: 10.5479/si.00963801.1141.195
BHL: 15716186
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