FIGURE 7 in LARGE SCAPHITID AMMONITES (HOPLOSCAPHITES) FROM THE UPPER CRETACEOUS (UPPER CAMPANIAN–LOWER MAASTRICHTIAN) OF NORTH AMERICA: ENDLESS VARIATION ON A SINGLE THEME

FIGURE 7. Scaphite terminology (after Landman et al., 2013: 9, fig. 3). A. Macroconch adult, right lateral view. Abbreviations: HH = whorl height at the point of recurvature; HP1 = whorl height at the adapical end of the phragmocone; HP2 = whorl height at the adoral end of the phragmocone; HS = whorl height at midshaft; LMAX = maximum length along the long axis; apt. <) = apertural angle. B. Microconch adult, right lateral view. Specimens were photographed from the right lateral, left lateral, ventral, and apertural directions. C. Close-up of the umbilicus of the macroconch showing the umbilical diameter measured parallel to the long axis (UD). D. View of the venter of the body chamber at midshaft, with the adoral direction toward the top, showing the width of the venter (VS), as measured between the ventrolateral margins.