Fig. 7From: Another lesson from beautiful monsters: the case of 'sex reversals' in the Ammonoidea and their significanceComparison of the number of primary ribs with the diameter of mbe.9305 (black triangle), and mbe.1401 (black square) (black triangle) databased by Bonnot [25]: (A) Peltoceras athleta macroconchs [M], and (B) Peltoceras athleta microconchs [m]Back to article page