👉 Monodontal, also known as a trilobite, is a type of extinct animal that lived during the Cretaceous period. They were characterized by their elongated bodies with short limbs and sharp teeth, which allowed them to quickly swallow large prey. Monodonts had a unique ability to change their shape and size based on their environment, such as changing from being flat to curved or from upright to inverted. Monodontal animals played an important role in the evolution of various animal groups