Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.5
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
3881
Points per Word
0.000258
Page Count
40
Points per Page
0.025
Description
One hundred million years ago, the skies were filled with enormous flying reptiles. With wing spans up to nearly forty feet, pterosaurs ruled the skies.