Unformatted text preview: 4. When did the first land plants appear? 375 million years ago 5. When did the first amphibians appear? 360 million years ago 6. When was the largest mass extinction? Permian extinction- 250 million years ago 7. When did the first birds appear? 150 million years ago, however, the evolutionary history of birds is still somewhat unclear. 8. What is Pangea? When did it start to fall apart? It is the great supercontinent; 190 million years ago 9. The first grazing animals appeared with the first grasslands. When was that? 25 million years ago 10. When did the first hominids appear? 1.5 million years ago...
View Full Document
- Fall '16
- Evolution, largest mass extinction, 1.5 million years, 25 million years, 150 million years, 190 million years