12_Vertebrates - Instruction View full-screen images in the...

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Instruction: View full-screen images in the Slide Show mode of display. Read the explanatory notes in the Normal View mode of display.
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FINISH Chapter 15. Next lecture: begin Chapter 16. Bony fish Tetrapods (amphibians) GEOLOGIC HISTORY OF VERTEBRATES (continued) synapsids flying reptiles Mammals Birds swimming reptiles dinosaurs Reptiles
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New Features: enamel scales, internal bony skeleton Feeding Habits: various Dominant during: late Phanerozoic time Examples: most modern fish Jawed Fish: Bony Fish ossified vertebrae
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Jawed Fish: Bony Fish: Ray-finned Fish rays of bones in fins highly successful today 99.9% of modern species
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Coelacanth Jawed Fish: Bony Fish: Lobe-finned Fish bony stump in the fin, some species with lungs mid-Paleozoic through today (Figure 15-12) ray-fin lobe-fin
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Bony fish Tetrapods (amphibians) GEOLOGIC HISTORY OF VERTEBRATES (continued) synapsids flying reptiles Mammals Birds swimming reptiles dinosaurs Reptiles
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Tetrapods tetrapods : 4-limbed vertebrates and their descendents most species have four limbs with digits.
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