supported by the Open Foundation of State Key Laboratory of Palaeobiology and Stratigraphy (103105);the National Natural Science Foundation of China (41072016);the National Basic Research Program of China (2007FY110200)
Periodicity of Retzius lines is a key factor in dental development. In this study, we examined the periodicity of Retzius lines in fossil Pongo from South China using polarized light microscope observation of dental g...