This monster manual presents d20 stats for 50 dinosaurs that could have evolved on Earth -- but didn't. These "dinosaurs that never were" can be found in Storm Valley on the planet of Cretasus, where they have diverged fantastically from their Earth ancestors. Ranging from tiny and highly specialized to vicious killers and 90 HD behemoths, these fantasy dinosaurs present a new vista of encounters for any d20 campaign.

Features:

• Stats and background for 50 "dinosaurs that never were"
• Details on Storm Valley, its inhabitants, human colonization attempts, and military presence
• Expanded reference tables for dinosaurs by CR and terrain