FIGURE 32 in LARGE SCAPHITID AMMONITES (HOPLOSCAPHITES) FROM THE UPPER CRETACEOUS (UPPER CAMPANIAN–LOWER MAASTRICHTIAN) OF NORTH AMERICA: ENDLESS VARIATION ON A SINGLE THEME

FIGURE 32. Sutures of Hoploscaphites crassus (Coryell and Salmon, 1934), H. plenus (Meek and Hayden 1860), and H. peterseni. A. Hoploscaphites crassus, AMNH 76167, microconch, second from last suture, H = 22.1 mm, AMNH loc. 3921, lower Baculites baculus Zone, Pierre Shale, Cedar Creek Anticline, Montana. B. Hoploscaphites crassus, AMNH 76166, microconch, fourth from last suture, H = 21.5 mm, AMNH loc. 3921, lower Baculites baculus Zone, Pierre Shale, Cedar Creek Anticline, Montana. C. Hoploscaphites plenus, macroconch, BHI 4130, second from last suture, AMNH loc. 3921, Baculites baculus or lower B. grandis Zone, Pierre Shale, Cedar Creek Anticline, Montana. D. Hoploscaphites plenus, microconch, YPM 35597, second from last suture, W = 18.4 mm, Baculites baculus or lower B. grandis Zone, Pierre Shale, Wibaux (= Mingusville), Montana. E. Hoploscaphites peterseni, macroconch, AMNH 76187, last suture, AMNH loc. 3921, lower Baculites baculus Zone, Pierre Shale, Cedar Creek Anticline, Montana.