👉 Trachodontids are a group of small to medium-sized reptiles that were once common in the Americas. These creatures had large, powerful jaws and teeth, which allowed them to chew on hard plant matter such as leaves and stems. They also possessed a unique body structure with four sets of fused vertebrae, known as a "trapezium" or "trachotomy". The trachodontid is named after the type of plant it ate, which was commonly a tree,