First Grade
Worksheets
Meet Spinosaurus
This dinosaur had a row of tall bones or spines that stuck up straight up along its back. The spines looked like a sail on its back. The sail was six feet tall!
The sail may have helped it use the sun to keep warm. On cold days, maybe it turned the sail toward the sun. The sun would warm its body. On hot days, it could cool its body by moving into the shade.
