From Erik Arneson at About.com:'Produced by Ideal in 1962, this game is based on the toy of the same name. It came with four cavemen to represent the players (green, yellow, red, blue), 16 dinosaurs (four each in the same colors), a variety of dinosaur eggs, two decks of cards, a spinner, and the game board. The board was illustrated with about two dozen dinosaurs, plus various geological features.' - BoardGameGeek