Plagiaulacidae

Plagiaulacidae is a family of fossil mammals within the order Multituberculata. Remains are known from the Upper Jurassic of North America through the Lower Cretaceous of Europe. These small plant-eaters lived during the Mesozoic era, also known as the "age of the dinosaurs." They were among the more derived representatives of the informal suborder of "Plagiaulacida".