FIGURE 1. Apical views of the shell (A) and protoconch (B) of Omalogyra liliputia (Laseron, 1954) (specimen 1), showing the placement of measurements used in this study. Abbreviations: pd, maximum diameter of the protoconch; sd1, maximum diameter of the shell; sd2, maximum diameter of the shell perpendicular to sd1. Scale bars: A = 0.2 mm; B = 0.1 mm.