👉 Dichodontia is a group of extinct, terrestrial vertebrates that lived during the late Cretaceous period between approximately 58 and 47 million years ago. They were characterized by their distinctive lower jaw structure known as the "diplopia," which allowed them to swim efficiently in water. This type of evolution was marked by rapid diversification across a wide range of evolutionary stages, including the emergence of various forms of reptiles, birds, and mammals.
