| Ammonoids from the Lower Triassic Union Wash Formation, Union Wash, Inyo County, California. "Figures 1-23 Owenites koeneni; 1-4 side, front and rear views and septum of the type specimen; 5-6 side and front views of a specimen showing only the body chamber in the last volution; 7-10 side, front, and rear views and septum of adolescent specimen, showing the transition from goniatite to ceratitic stage, diameter 15 millimeters; 11-13 side, front and rear vews of an adolescent specimen, showing only the goniatitic stage, diatmeter 9 millimeters; 14 septum from the same specimen; 15-17 side, front and rear views of small adolescent specimen, diameter 5 millimeters; 18-19 left side and septum of larval specimen, showing Nannites stage, diamter 2.4 millimeters; 20-23 side, front, and rear views and septum of larval shell showing the Nannites stage, diamter 1.9 millimeters." |