| Ammonoids from the Lower Triassic Union Wash Formation, Union Wash, Inyo County, California. "Figures 1-7 Meekoceras (Koninckitis) mushbachanum; 1-2 side view and septum of a large specimen; 3-5 side and rear views and septum of a smaller specimen; 6-7 side and front views of an immature specimen." |