Figure 8. Proposed biomechanical behaviour ofGastropteron radula, based on mechanical property tests and the documentation of the radular wear. A. Radula 3D model from frontal view with clamped Foraminifera between inner laterals. B. Model from above. C. Model from the side. Arrows indicate the folding towards the radular groove, which enables the clamping of ingesta. Afterwards the radula with the particles is pulled into the mouth cavity (arrow in B).