The Magic School Bus + Rides Again Wiki
The Magic School Bus + Rides Again Wiki

In the Time of the Dinosaurs is the sixth book in the original book series. It was written by Joanna Cole and illustrated by Bruce Degen. It marks the debut of Carlos Ramon and Keesha Franklin.


Ms. Frizzle is taking her class to a dinosaur dig to look for some Maiasaura nests. But as soon as they get there, the bus turns into a time machine and transports them back to prehistoric times--when dinosaurs roamed the Earth!

Prehistoric animals

  • Allosaurus
  • Ankylosaurus
  • Apatosaurus
  • Archaeopteryx
  • Brachiosaurus
  • Coelophysis
  • Compsognathus
  • Elasmosaurus
  • Ichthyosaurus
  • Lambeosaurus
  • Maiasaura
  • Pachycephalosaurus
  • Parasaurolophus
  • Pteranodon
  • Saltopus
  • Stegosaurus
  • Struthiomimus
  • Styracosaurus
  • Triceratops
  • Troodon
  • Tyrannosaurus Rex


  • Although Carlos and Keesha were introduced in this book, it was in production at the same time as the TV series that premiered the same year the book was published.
  • This is the second book to have a different book cover outlook from being republished.
  • In the republished version, the Bus's overhead sign says DINO ALERT.
  • In the Season 1 VHS tapes (as well as the TV episodes from the original TV series) excluding the five books before this one in the funding Magic School Bus Book promo, this one was introduced as the new book of the series featured alongside the five in the promo.
  • This book marks marks the first time Ms./Prof. Frizzle's first name (Valerie) is mentioned.
  • At The Waterworks, Inside The Earth, Inside The Human Body, On The Ocean Floor, and this book are the only books that are featured in the funding Magic School Bus book promo in all three seasons on VHS (as well as the fourth season, which never received a commercial VHS release); while Lost In The Solar System was only featured on the promo for two seasons on VHS.
  • Wanda gets a new outfit in this book, which carries over to the 1994 series as her regular outfit.
  • In the republished version, John's camera doesn't record videocassettes. Instead, it is a digital camcorder.
  • This book spawned two episodes: The Busasaurus and The Land Before Tim.
    • Coincidentally, both episodes are in the second seasons of their respective series.
  • The book from the classic series In the Time of the Dinosaurs had two adaptations in the original media --regarding to original media of the TV series, TV tie-in books, or video game series-- (an episode from the original Magic School Bus TV series and a CD ROM from the original software in the video game series).
    • There were two adaptations from the book:
      • The TV adaptation The Busasaurus (loosely adapted from the book) is set in the Cretaceous period unlike in the book. Only the book shows all the time periods. (See The Busasaurus page for differences from the book.)
      • The software adaptation Explores in the Age of Dinosaurs (also loosely adapted from the book) also has differences. But like the book, all three time periods are shown. (See the Explores in the Age of Dinosaurs page for differences from the book.)