Fig. 16. Amia, the bowfin. This too is rare but present at Fossil Butte. Length of original, 67 cm. Collection of American Museum of Natural History.
Fig. 17. The fossil herring, Knightia. This fish is by far the most abundant in the fish beds at Fossil Butte and at least in one layer was involved in a catastrophic mass mortality. Length of each fish, 13 cm. Collection of University of Wyoming.
Fig. 18. The herring, Knightia.
Fig. 19. Diplomystus, another type of herring, is the second most abundant fish at Fossil Butte. Length of original, 12 cm. Collection of University of Wyoming.
Fig. 20. A large Diplomystus with four small bass, Priscacara. Length of Diplomystus, 45 cm. Collection of University of Wyoming.