Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.4
Points
7.0
Fiction/Nonfiction
Nonfiction
Word Count
40733
Points per Word
0.000172
Page Count
167
Points per Page
0.041916
Description
This book describes prehistoric sea creatures from the Ordovician period, 450 million years ago, to the Pliocene period, four million years ago, reconstructed using computer graphics based on scientific evidence.