The striae of Retzius are incremental growth lines or bands seen in tooth enamel. They represent the incremental pattern of enamel, the successive apposition of different layers of enamel during crown
Tooth of a Paranthropus robustus with striae of Retzius visible on the left side
The terminations of striae of Retzius in a canine, called perikymata. (Visible in the picture's high resolution)
The Max Planck Institute for Evolutionary Anthropology is a research institute based in Leipzig, Germany, that was founded in 1997. It is part of the Max Planck Society network.
The main building of MPI EVA in Leipzig, Germany
Jean-Jacques Hublin at Jebel Irhoud (Morocco), pointing to the crushed human skull (Irhoud 10) whose orbits are visible just beyond his finger tip