Allometric shape variation in Icriodus alternatus; A. Relationship between the total length of the element and the Common Allometric Component, based on the aligned coordinates of the posterior part of the element; B, C, D. Visualization of the deformation in profile and oral view, corresponding to extreme size values; in yellow tip of the denticles, in green valley landmarks, in black the pit; B. Configuration corresponding to the minimum length; C. Shape change from the minimum (dots) to the maximum (tip of the vectors) length; D. Configuration corresponding to the maximum length.