Warning: Time travel can be hazardous to your health. Do not attempt to visit the land of the dinosaurs without proper preparation and insurance.
When visiting the Pre-Cambrian period, be aware that the food selection is limited to plants and rocks. Don't forget to bring your own snacks.
Dino-Dos and Don'ts for Prehistoric Visitors
The Rocky Road to Nowhere (a travel guide)
Dino-Emergency Services: What to do when your T-Rex gets stuck in the tar pit