Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.1
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2176
Points per Word
0.00023
Page Count
32
Points per Page
0.015625
Description
The earliest known bird, Archaeopteryx, first appeared about 150 million years ago. This bird was no larger than a crow, but has proved remarkably important to scientists searching for answers about the ancient relatives of modern-day birds.