The Takara Diaclone Dinosaur Robos are the first releases of the toys that became the Transformers Dinobots. The toy commonly referred to as 'Diaclone Swoop' was an early 80s Japanese-only release called Dinosaur Robo No.5 Pteranodon. This followed on from the Tyrannosaurus (pre-Grimlock), Stegosaurus (pre-Snarl), Triceratops (pre-Slag) and Brontosaurus (pre-Sludge), and is easily the most expensive and desirable of the five.
