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| Description: Turtles have a bony, scale-covered shell attached to the backbone A 200-million-year-old fossil turtle found in China has a protective plate derived from expanded ribs on its ventral side, but no shell on its back; it also has teeth In modern turtles, a layer of keratin covers their jaws and forms a beak; some feed on plants and others are predators Picture Stats: Views: 74 Filesize: 479.63kB Height: 938 Width: 1500 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=48031 |