2 books · Ages 7–12 · Chapter Books
Paleo is a 2-book series for ages 7–12 by Timothy J. Bradley. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Paleo Bugs: Survival of the Creepiest and Paleo Sharks: Survival of the Strangest are great first picks.
No particular order needed — browse and pick what catches your eye.