| Ammonoids from the Lower Triassic UnionWash Formation, Union Wash, Inyo County, California. "Figures 1-7 Proptychites walcotti; 1-3 side and front views and septum of the type specimen; 4-6 side and front views and septum of a small specimen (broken out of the shell shown in fig. 7), diameter 10 millimeters; 7 side view of a large shell out of which was broken the small specimen shown in Figures 4-6." |
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Ammonoids At Union Wash, California