Fig. 3 in Low durophagous predation on Toarcian (Early Jurassic) ammonoids in the northwestern Panthalassa shelf basin

Fig. 3. Measurements for analysing the ventral breakage of ammonoid shells. Lines A, B, and C are the reference lines: A, from the coiling centre to aperture; B, apertural marginal line of damage; C, adapical marginal line of damage. Shaded area indicates body chamber. The length and depth of the breakage were also measured.