"The local police prove unhelpful when a 500-pound dinosaur skull vanishes from a secret excavation on Sage's family's ranch, so Teddy and his friends conduct their own investigation." --

Butterflies are as light as a feather and as old as the dinosaurs. Wherever dinosaurs roamed, butterflies were not far behind. Long after the dinosaurs disappeared, butterflies are still bringing joy and beauty to our world.

When the owner of Treasures of Time agrees to hold a fossilized shark's tooth for him for one week, Freddy must think of a way to earn the fifty dollar price.

"The Aldens visit a dinosaur dig in Montana and soon become involved in a mystery involving missing dinosaur bones"--

In two parallel stories, an intelligent female member of a prehistoric tribe becomes instrumental in advancing the lot of her people, and the daughter of a paleontologist is visiting him on a dig in Africa when important fossil remains are discovered.

"One stormy night a little black kitten appears on the museum steps. Tabby cat Tasha is delighted to show Peter the museum's passageways and secret corners but the other cats aren't as keen to welcome the new arrival. Determined to prove that Peter is just as much of a museum cat as any of the others, Tasha takes him on a rat hunt. But the pair's quest almost ends in disaster when they find themselves in the Dinosaur Gallery, with its famous T-Rex...

Curious George and the man in the yellow hat help some scientists dig for dinosaur bones.

"Young paleontologists are invited on a fossil dig, set to the tune of Here We Go 'Round the Mulberry Bush.' Hike the trail, scan the ground, and make a find--then discover how to build a dinosaur from its bones. Includes song motions and bite-size science sidebars."

When Brother and Sister visit the Bearsonian Museum, they luck out. A real dinosaur dig is taking place. What sort of fossils will they find? A Stegosaurus? A Spinosaurus? The mighty Tyrannosaurus rex? Dig in with the Berenstain Bears and find out!

Pinkerton's natural canine urge to chew on things while teething coincides with a chaotic visit to the museum's collection of dinosaur bones.