In this fun spin-off to the bestselling middle grade adventure series, young readers meet the prehistoric ancestor of mouse journalist Geronimo Stilton.

Who is Geronimo Stiltonoot? He is a cavemouse—Geronimo Stilton’s ancient ancestor. He runs the stone newspaper in the prehistoric village of Old Mouse City. From dealing with dinosaurs to dodging meteorites, his life in the Stone Age is full of adventure!

Geronimo Stiltonoot wakes up to a terrible morning. Meteors are falling from the sky, and it seems like everyone in Old Mouse City has an awful stomachache! Geronimo must travel to the Cave of Memories to find the ancient shaman cure for his fellow cavemice. But dangers lurk on his journey—can he make it back home safely?

Praise for the Geronimo Stilton Cavemice series:

“Fans of the other Geronimo Stilton books will definitely embrace the over-the-top silliness in this new spin-off.” —Booklist

Praise for Geronimo Stilton’s books:

“Lightning pace and full-color design will hook kids in a flash.” —Publishers Weekly