Everyone in second grade seems set on breaking a world record and friends Ivy and Bean are no exception, deciding to become the youngest people ever to discover a dinosaur skeleton.

"The year is 1876. Warring Indian tribes still populate America's western territories even as lawless gold-rush towns begin to mark the landscape. In much of the country, it is still illegal to espouse evolution. Against this backdrop, two monomaniacal paleontologists pillage the Wild West, hunting for dinosaur fossils while surveilling, deceiving, and sabotaging each other in a rivalry that will come to be known as the Bone Wars. Into this treacherous...

"When a boy and his dog go for a hike, the boy trips on a fossil, and it comes to life, revealing an ancient plant. The boy is so intrigued that he breaks two more fossils that come to life a dragonfly and a pteranodon. When these prehistoric creatures collide with present reality, the boy must figure out a way to make things go back to normal."--Amazon.

Surprises are in store as Stink excavates his backyard in search of a relic from an extinct beast-- and Judy lends him a little sleight of hand. Mega-chomp! Stink wants to make the find of the century. He's on a dig, dig, digging quest in his backyard to find a tooth from a saber-toothed cat, otherwise known as a Smilodon. Why not? Two kids in Michigan found a mastodon bone in a backyard stream, and a girl in Great Britain found a pterosaur bone....

Nine-year-old Frank, his cousin Sam, and cat Saurus's efforts to keep Peanut the newly-hatched dinosaur's existence a secret become more complicated when their grandmother finds a new fossil that looks like Peanut's horn, but a thousand times bigger, and a crew comes to make a movie about it.

In their long journey from San Francisco to Lusk, Wyoming, in 1889, David (Siu-Long) Wong and his parents have encountered terrible prejudice because they are Chinese immigrants; but here they are given a job at John Bell Hatcher's paleontological excavation digging up dinosaur bones, including an eight-foot long Triceratops skull, and David becomes fascinated by dinosaurs and resolves to become a paleontologist. Includes historical note on J.B. Hatcher....

The reader's choices determine whether three friends will survive after being mysteriously transported back in time to when huge insects swarmed the skies and fearsome dinosaurs ruled.

Geronimo Stilton's ancestor, Geronimo Stiltonoot, investigates a witness's claim of a moving mountain of ice.

The magic tree house transports Jack and Annie on a mission to the Ice Age where they encounter Cro-Magnons, cave bears, sabertooth tigers, and woolly mammoths.