TABLE 2 in First evidence of cannibalism in Crassimurex (s. s.) calcitrapa (Lamarck, 1803) (Gastropoda, Muricidae) from the Lutetian of the Paris Basin (France)

TABLE 2. — Morphological and functional patterns of holes associated with gastropod and Octopus predation (modified from Gordillo et al. 2022).
CharacteristicPattern APattern BPattern CShapeA hole, round to ovalPaired breaksA hole, rounded to irregularOutline characterRegular outlineIrregular breakageRegular to irregularProfile cross sectionStraight or sloping sides or parabolic outlineRandom breakageWidth and direction of hole vary with depthDrill hole locationPrimarily Abapertural, dorsal to ventralUnspecifiedApertural, ventral to dorsal, parietal (left)Produced bySecretions of the ABO and rasping by the radulaPossible chemical softening and biting marks of upper and lower beaksSecretion of salivary glands and rasping by radula and teeth of the papillary shield and terminal processPotential predatorDrilling gastropodsOctopusOctopusPresent in this samplingYesNoNo