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Unformatted text preview: b. Tiktaalik Roseae - ~375MYA Canada fishapod represents a transitional group between early fish and the amphibians and other tetropods c. Habitat drying up, dwindling food d. Fleshy fins > legs e. Easier to meet oxygen demands f. Not totally terrestrial g. Lungs, skin, mouth lining 6. Reptilia a. Cotylosaurs, diverged 300MYA b. Dry, scaly skin, legs under body c. Internal fertilization d. Fertilized egg develops in female e. Amniote egg f. More convoluted lungs g. 3 chambered heart oxygenated and deoxygenated lung 7. Aves birds a. Air theory smale arboreal reptile b. Ground theory bipedal dinosaur c. Theropods talons to catch its prey...
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This note was uploaded on 01/31/2011 for the course BS 110 taught by Professor S.lawrence during the Fall '07 term at Michigan State University.
- Fall '07