Start with high-confidence prehistoric stories books, then narrow by subgenre or adjacent topics.
Chronicles of Ancient Darkness #5: Oath Breaker
Michelle Paver
My Daniel
Pam Conrad
The First Dog
Jan Brett
Sunset of the Sabertooth Graphic Novel
Mary Pope Osborne
Maroo of the Winter Caves
Ann Turnbull, James Cross Giblin
The Boy of the Painted Cave
Justin Denzel
Dinosaurs Galore!
Giles Andreae
You Are My Pride
Carole Boston Weatherford
Dinosaur Munch! the Diplodocus
Peter Curtis, Jeanne Willis
Dinosaur Whack! the Stegosaurus
Boy Here, Boy There
Chuck Groenink
In the Shadow of Sunrise
Jennifer Bohnhoff
