Dinosaur Detectives is the ninth novel in The Magic School Bus: Science Chapter Books, a spin-off to the main canon.
It is the second novel to be narrated by Ralphie since "The Truth about Bats" and is based on "The Magic School Bus in the Time of the Dinosaurs" and "The Busasaurus".
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"Hi, I'm Ralphie. I'm one of the kids in Ms. Frizzle's class.
We just wanted to study dinosaurs at the Museum of Natural History. Instead, we almost became fossils ourselves when we traveled back in time to the Mesozoic Era! We learned first-hand what the differences were between plant eaters and meat eaters. And then we found out how fast a T. rex can really run--whoo! We were in for a Jurassic adventure when we became real Dinosaur Detectives!"
| Science Chapter Books (1999-2001) | The Truth about Bats · The Search for the Missing Bones · The Wild Whale Watch · Space Explorers · Twister Trouble · The Giant Germ · The Great Shark Escape · Penguin Puzzle · Dinosaur Detectives · Expedition Down Under · Insect Invaders · Amazing Magnetism · Polar Bear Patrol · Electric Storm · Voyage to the Volcano · Butterfly Battle · Food Chain Frenzy · The Fishy Field Trip · Color Day Relay · Rocky Road Trip |
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| The Magic School Bus to the Rescue (2002-2003) | TTR: Forest Fire · TTR: Earthquake · TTR: Blizzard · TTR: Flashflood |