Fig. 4

For each tooth type (Ct, central tooth; Lt I, lateral tooth I; Lt II, lateral tooth II; Mt, marginal tooth), part (Ba, basis; Cu, cusp; St, stylus), and each zone: Hardness, given in GPa, Young’s moduli, given in GPa; Fe, Ca, and Te (‘trace elements’) proportions, given in atomic %. Left side: native radulae, right side: treated radulae