👉 The term "iguanodontaidea" refers to a group of extinct animals that lived during the Mesozoic era (around 65-60 million years ago) and were known for their large, elongated heads. These animals had a distinctive shape and size, with a round head covered in thick hair or feathers, and long, pointed teeth. The iguanodontidae are considered to be the most diverse group of ungulates in the world, as they include both