Author: Siberling N.J. & Nichols K.M.,
Title: Middle Triassic molluscan fossils of biostratigraphic significance from the Humboldt Range, northwestern Nevada
Description: 1982. In 4to, original wrappers, pp. 154 with 38 pls. with facing captions, 49 figs. and 4 tabs. Geol. Surv. Prof. Pap., 1207. Ex Library stamps but a very good copy.

Keywords: shells fossil ammonites paleontology geology


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