› If you have ever seen old, plastic dinosaur toys, you may have noticed that they all look the same, no matter what toy company made them. After you familiarize yourself with the toys from different toymakers, however, you will find that there actually are ways to tell them apart. For example, MPC dinosaur toys look a lot like Marx dinosaur toys, and if you visit Realm of Rubber Dinosaurs you can learn what the differences are. This page will also show you the differences between different versions of Marx dinosaurs based on mold markings. I recently bought some MPC dinosaur toys and have noticed that they show a lot of variation. I thought I would post some of those differences here.