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Lecture 10

Lecture 10- BIOC50 theropod evolution

Biological Sciences
Course Code
Jason Weir

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Lecture 10 : Theropods and the Evolution of Birds
Diapsids -> Dinosauria -> Theropods

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Question: Why might the largest of the Theropods represent evolutionary dead-ends?
Ex Giganotosaurs (13m)
1) Limited resources required specialized niches
2) Specialized massive bones and muscles were hard to sustain
SPinosaurus (13-18m):
- Skull adapted to catching fish: curved jaws caught the slippery fish
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