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 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 a legendary valley, and Geronimo isn't even sure it exists. Little does he know that getting there will be an adventure among geysers, volcanoes, and rivers of molten lava.

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.

Prehistoric mouse Geronimo Stiltonoot and his family help a shipwrecked rodent search for a missing treasure that can help him return home.

When the Cavemice discover a giant oyster in the lagoon near Old Mouse City, they call on Geronimo Stiltonoot to help them fish it out of the water before the saber-toothed tigers find the pearl.

It's the start of an exciting cavemice contest: a race to Boulder Bay and back! It's a dangerous route, but it will supply the village cheese maker with rare hot lava peppers, and there's a big cash prize. Trap teams up with Geronimo -- who has a lazy, slow, city autosaurus (the cavemice mode of transportation). Can they reach the finish line without going extinct on the way?

Geronimo Stiltonoot and his friends participate in a treasure hunt set up by his rival and are determined to overcome all of its challenging obstacles, including tricky riddles and smelly dinosaurs.

Geronimo and his friends participate in a treasure hunt set up by his rival and are determined to overcome all of its challenging obstacles, including tricky riddles and smelly dinosaurs. "En Petrópolis está a punto de comenzar el juego de la Búsqueda del Tesoro más superratónico de la Edad de Piedra. Valiéndose de una serie de pistas misteriosas y chocantes, Geronimo Stiltonut y sus amigos tendrán que resolver adivinanzas y otras pruebas...