FIGURE 3 in Drilling predation traces on recent limpets from northern Patagonia, Argentina

FIGURE 3. (1). External view of a specimen of Nacella magellanica with a drilling on the posterior part (CEGH-UNC- 26872). (2). Internal view of a specimen of Nacella magellanica with a drilling on the posterior part, above the Ushaped muscle scar (CEGH-UNC-26873). (3). Modeling of limpet shell as cone and truncated cones to estimate the proportion of the area represented by the different sectors. To the left, a real representation of a limpet shell. The Ushaped muscle scar (U-scar) is visible from the inside. To the right, the model composed of one cone and two truncated cones.