Fig. 22 in Cephalopods from the Cretaceous/Tertiary Boundary Interval on the Atlantic Coastal Plain, with a Description of the Highest Ammonite Zones in North America. Part 1. Maryland and North Carolina

Fig. 22. Relative spacing of tubercle rows in Discoscaphites minardi, n.sp. In each specimen, the umbilicolateral bullae (ul) and outer ventrolateral tubercles (ovl) are plotted on the left and right side, respectively, with the midflank swellings (mf) and inner ventrolateral tubercles (ivl) in between. M, macroconch; m, microconch.