This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Homo erectus.svg Skull of Homo erectus Sinanthropus pekinensis Size of the brain Homo erectus Sinanthropus pekinensis Tamao del cerebro Own work based on Image Homo erectus User Editor at Large Homo erectus in art Anatomical plates and drawings of the human skull Diagrams labelled with numbers only Homo erectus skulls