When I was a boy, like seemingly every other boy on the planet, I liked dinosaurs. Back then, I only knew of a few different kinds, the main ones being Tyrannosaurus Rex, Triceratops, Stegosaurus, Pterodactyl and Brontosaurus. Brontosaurus was a very, very large plant eater that walked on four legs and had a very long neck and tail. Now, years later, as the parent of two growing boys, I am again becoming familiar with dinosaurs.