black and white illustration of stethacanthus (extinct shark), showing large dermal denticles on its head and first dorsal fin, early carboniferous period - denticle 幅插畫檔、美工圖案、卡通及圖標鯊魚
simple geometry pattern with line mash. grid style hexagon motif for surface design for print and web. - denticle 幅插畫檔、美工圖案、卡通及圖標有邊框的, 現代 - 風格, 復古風格