turtle - any of various aquatic and land reptiles having a bony shell and flipper-like limbs for swimming

arthropod - invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin

cuticula - the outer body wall of an insect

mollusc, mollusk, shellfish - invertebrate having a soft unsegmented body usually enclosed in a shell

exoskeleton - the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs

shell - the material that forms the hard outer covering of many animals