Dinosaurs were all wiped out, A long way back in history, No one knows quite how or why, This book solves the mystery. You may wonder why dinosaurs became extinct, well here is the They were all wiped out in a mighty Pants War! Join T-Rex and the rest of the gang as they slog it out to gain prehistoric pants supremacy in this hilarious follow-up to the award-winning Aliens Love Underpants.