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Lecture 4

BSC 196 Lecture 4: Bio- Lecture 4


Department
Biological Sciences
Course Code
BSC 196
Professor
sakaluk
Lecture
4

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Saturday, January 28, 2017
1
Evidence of Evolution
Predictions from fossil record
- Transitional forms
There should be immediate forms between major taxonomic groups
Best tested in groups likely to fossilize
- Vertebrates, bones and teeth
- First major evidence: Archaeopteryx (1860 in Germany)
Dinosaur-Bird transition
- Archaeopteryx
Dinosaur traits
- Teeth
- Separate clawed fingers
- Long bony tail
Bird traits
- Feathers
- Opposable big toe
- Birds
Fused hand bones
Enlarged sternum
Reduced tail
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