Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.2
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2158
Points per Word
0.000232
Page Count
32
Points per Page
0.015625
Description
Neither fish nor lizards, ichthyosaurs swam ancient seas for nearly 150 million years. This book reveals how more than 80 species of these dolphinlike reptiles commanded Earth's prehistoric waters at the same time dinosaurs walked on land.