A family of Dinosaurs, in the stone age, where dinosaurs are the masters of the world and the Sinclairs are the focus of the show. There is: Earl (the father), Fran (the mother), and three kids (one brother, one sister and the famous Baby Sinclair). It is similar to the Flintstones except it is inverted, in the sense that dinosaurs rule the planet and cavemen are their servants. They also have a neighbour who is a Brachiosaurus, and which only shows her head and neck but not her body. Also there is The Boss, who is a ferocius Triceratops. The best friend of Earl a T-Rex who is very timid and shy with women, and several other characters.