Fig. 3
a Automated measurement system for shell morphology (from AMOR), that was used for the present investigation. b Motorized tilting stage of AMOR, which is installed underneath the binocular microscope. It is equipped with an LED illumination, consisting of a removable frame holding 10 Moonstone 1Â W Power LEDs. The frame with the LEDs moves together with the specimens while translating the stage in X- and Y direction or tilting the stage forwards-backwards or from left to right (see Supplement#22 in MorphCol of Knappertsbusch 2015a). The advantage of this installation is a constant light intensity on the specimens that is independent from the mechanical movement of the stage, in contrast to a standard illumination, where for example an external swan-neck fiber optics has a fix position with respect to the moving stage