illustration showing estivation of grove snail or brown-lipped snails (cepaea nemoralis) on grass stems during hot, arid summer - 鈣質的 幅插畫檔、美工圖案、卡通及圖標
orbulina foraminifera, 覆蓋著鈣化針 (拉丁語為 "洞持有人"; 非正式地稱為 "forams") 是單細胞生物, 植物或類阿莫布德蛋白體的成員, 通常是不同形式和材料的外部外殼 - 鈣質的 幅插畫檔、美工圖案、卡通及圖標
comparative shell coiling and surface texture of spirorbis species from the devonian - 鈣質的 幅插畫檔、美工圖案、卡通及圖標螺旋狀
palaeocarpilius macrocheilus, a fossil crab species from the eocene epoch, named after its large claws ,"macrocheilus" or "macrocheilus" meaning "large claw" - 鈣質的 幅插畫檔、美工圖案、卡通及圖標
microscopic skeletal architecture and internal chambering of the foraminifer nummulina laevigata - 鈣質的 幅插畫檔、美工圖案、卡通及圖標
microscopic section of a calcareous breccia in the lower silurian coniston limestone of shap wells, westmoreland - 鈣質的 幅插畫檔、美工圖案、卡通及圖標地球