Fig. 2From: Age and growth of Glycymeris longior (Sowerby, 1832) clam at the southern edge of its distribution (Argentine Sea)Glycymeris longior. a Right valve; line represents the maximum growth axis. b Thick section of shell showing three measurements (dash lines). c Detail of ventral margin of a shell. Translucent increments (white arrows) and opaque increments (black arrows) are shown. Growth breaks in the shell surface are marked with (*). DOG: direction of growthBack to article page