https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13986790Edit ImageSaveSaveEditCropCustom TextA variety of fossils characteristic of the carboniferous system. Line block.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 808 x 1200 px | 300 dpiLarge JPEG 2173 x 3229 px | 300 dpiFree DownloadA variety of fossils characteristic of the carboniferous system. Line block.More