Pelycosaurs cover

Reading Metrics

Grade Level Middle Grades (MG 4-8)
Book Level 5.2
Points 0.5
Fiction/Nonfiction Nonfiction
Word Count 2306
Points per Word 0.000217
Page Count 32
Points per Page 0.015625

Description

Pelycosaurs were lizardlike creatures that inhabited Earth long before dinosaurs first appeared. From sail-backed Dimetrodon to tiny Archaeothyris, pelycosaurs shared characteristics of both mammals and reptiles.