Charlie Parry wrote in with a picture of the new Kmart Exclusive Imaginext Dinosaurs Set, which should be in stores now. Each set is $24.99 and includes redecoes of the Pteranodon (in blue) and the Raptor (in green).
To date this is the only known exclusive Dinosaurs set (with the Dino-Riders style toys) but as always, we'll keep you posted as we find more!
