Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
4.1
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2658
Points per Word
0.000188
Page Count
48
Points per Page
0.010417
Series
First Chapters
Description
This book surveys the latest information on these fascinating creatures and explores the theories of what caused their disappearance millions of years ago.