Geronimo Stilton's ancient ancestor Geronimo Stiltonoot is back in another prehistoric adventure! Geronimo Stiltonoot and his family save a young dinosaur from the river! The dinosaur and Benjamin quickly become good friends. But the dino turns out to have a tremendous talent . . . for mischief! Can Geronimo get him back to his herd before he causes a megalithic disaster?

Geronimo Stiltonoot and his family save a young dinosaur from the river. The dinosaur and Benjamin quickly become good friends, but the dino turns out to have a tremendous talent for mischief. Can Geronimo get him back to his herd before he causes a megalithic disaster?

Geronimo Stiltonoot and his family save a young dinosaur from the river. The dinosaur and Benjamin quickly become good friends, but the dino turns out to have a tremendous talent for mischief. Can Geronimo get him back to his herd before he causes a megalithic disaster?

After saving a baby dinosaur from the river, Geronimo Stiltonoot discovers that it is incredibly mischievous and tries to find a way to get it back to its herd.

For cavemouse Geronimo Stiltonoot, life is one prehistoric problem after another! In the lagoon near Old Mouse City, cavemice have discovered a giant oyster. It holds a pearl of megalithic proportions! Since the mice of the lagoon don't have the tools to fish the oyster out of the water, they call on Geronimo Stiltonoot to help. Can figure out how to get the pearl before the saber-toothed tigers catch wind of it?

Geronimo Stilton's ancient ancestor Geronimo Stiltonoot is back in another prehistoric adventure! Geronimo Stiltonoot and his family are off to find a cure for Grandma Ratrock's aches and pains. She's heard that a remedy hides in Cheesy-La, a legendary valley that Geronimo isn't even sure exists. Little does he know that getting there will be an adventure among geysers, volcanoes, and rivers of molten lava!

In this fun spin-off to the bestselling middle grade adventure series, the prehistoric ancestor to Geronimo Stilton investigates a Stone Age mystery. Geronimo Stilton’s ancient ancestor Geronimo Stiltonoot is back in another prehistoric adventure! A visiting rodent has arrived in Old Mouse City with astounding news. On his recent journey to a cold, distant land, he spotted a mountain . . . moving! Holey cheese! Geronimo Stiltonoot sets off on a trip to the ice and snow to find out what lies behind this mystery. It’s a fur-raising expedition! Praise for the Geronimo Stilton’s 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