👉 Euplexauridae is a family of extinct mammals that lived during the late Cretaceous period, about 68 million years ago. This group includes two genera: Haplorhynchus and Mammacrhinchus. They were primarily herbivores but also had some carnivorous characteristics. Euplexaurs were known for their distinctive teeth with sharp incisor-like projections on the upper jaw, which they used to grind up vegetation like leaves, stems, and