https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14001080Edit ImageSaveSaveEditCropCustom TextThe skulls of a female and male great ape, possibly a chimpanzee. Lithograph.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 915 x 1200 px | 300 dpiLarge JPEG 2351 x 3084 px | 300 dpiFree DownloadThe skulls of a female and male great ape, possibly a chimpanzee. Lithograph.More