I recently asked which should I get on ebay? Dinsey Hydra or 2 Dino Rider toys, Deinonychus and Pteranodon. After the results I chose Dino Riders. But someone asked me (because I didn't mention which dinosaurs they are) which ones are they? Are they the rare ones? That got me puzzling, Which are the rarest Dino Rider toys? I know for one the Trex (but I don't own that yet, I hope to someday) I do own a Triceratops and Deinonychus and Pteranodon I've got coming. So are those some of the rarest or is there a list of rare ones?