Fig. 2 in Enamel microstructure of permanent and deciduous teeth of a species of notoungulate Toxodon: Development, functional, and evolutionary implications

Fig. 2. Enamel microstructure in upper molar of Toxodon sp. from the upper Pleistocene of Rio Grande do Sul State, Brazil (southern Coastal Plain, Santa Vitória Formation). Scanning electron micrographs of transversal sections of the ectoloph (A1) and paracone, including the anterior fold (A2–A4). MCN-PV 30077.PHIS-055, M3, general view of enamel exhibiting Schmelzmuster with three enamel types (A1), Hunter-Schreger bands in the enamel of loop from anterior fold on the protocone and modified radial enamel below the dashed line (A2), enamel of outermost loop from anterior fold on the metacone, in opposite position to that observed in A2 (A3, A4). Arrows indicate difference in depth between Hunter-Schreger bands. Dashed line in A1 indicates the morphology of enamel-dentine junction.