Figure 14. A, B in giant, spike-toothed salmon, Oncorhynchus rastrosus and the "Proto-Tuolumne River" (early Pliocene) of Central California

Figure 14. A, B. Measurements of O. rastrosus premaxillary teeth (31 specimens total), freshwater (pink/red) vs. coastal marine (grey/black). A. Average lengths of osseous bases. B. Average lengths of tooth cusps. Freshwater specimens are from the Mehrten Formation (pink) and Pinole Formation (red). Coastal marine specimens are from the Monterey, Santa Margarita, and Capistrano formations. How measurements were taken is shown in Fig. 10).