Monsters of the Past is the first group in the Weird n' Wild Creatures Knowledge Cards set. This group covers animals from the past, mostly dinosaurs, but also mammals, insects and other creatures, as well as some more recently extinct animals. Although the animals featured in this group no longer exist, they were certainly real at some point in Earth's history. It is represented by the color red. Monsters of the Past is the second largest group, outmatched by Strange Wonders. It has 123 cards.