Page 146 - Science Course 3 (Book 2)
P. 146
Mo11-L6b: Fossil Evidence About Mesozoic Era
pterosaurs Toward the end of the era, the sea level was so high
Mesozoic f ying reptile with large, bat-like wings. that inland seas covered much of Earth’s continents.
This provided environments for the evolution of new
organisms.
Throughout the Mesozoic era, the North American
continent moved westward.
Its western edge collided with several small
landmasses carried on an ancient oceanic plate.
The Rocky Mountains began forming from this
collision.
Let’s Begin
Geology of the Mesozoic Era
Sea level rose during most of the Mesozoic era.
Sea Level Rise
Present Sea Level
Rocky Mountains Appalachian
Triassic Jurassic Cretaceous Mountains
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