https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13967037Edit ImageSaveSaveEditCropCustom TextMollusc shells: classification chart showing 132 varieties, with a diagram below outlining details of the three main shapes. Coloured lithograph, 1830/1860.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 883 px | 300 dpiLarge JPEG 3235 x 2380 px | 300 dpiFree DownloadMollusc shells: classification chart showing 132 varieties, with a diagram below outlining details of the three main shapes. Coloured lithograph, 1830/1860.More