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Unformatted text preview: (body covering) may be smooth and glandular skin, scales , feathers , or fur . Note that skin per se is present in all cases. Limbs may be fins (paired pectoral and pelvic), poorly- or well-developed walking legs , or wings, and may be positioned under the animal or to the side. Teeth may be homodont (all of the same type) or heterodont (different types such as canines, incisors, etc.), or lacking altogether. Eggs may be amniotic (shelled and water-retaining) or non-amniotic (shell lacking). Class: Vertebral Column Jaws Skeleton Breathing Apparatus Integument Limbs Teeth Eggs Myxini Cephalaspidomorphi Chondrichthyes Osteichthyes Amphibia Reptilia Aves (traditional class) Mammalia...
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- Fall '11