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. 2013 Jan 17;3(2):424–436. doi: 10.1002/ece3.471

Figure 1.

Figure 1

Eighteen landmarks used in morphometric analysis (left). Interlandmark distances used to calculate traditional length measurements on the shell (right). The following traditional length measurements were calculated: shell height, upper body whorl width, lower body whorl width, aperture width and aperture height.