👉 Colotrechninae is a group of extinct, but highly similar, species of small-to-medium-sized reptiles that lived during the Mesozoic Era (from about 269 million years ago to about 65 million years ago). They are known for their distinctive large, flat head and long neck, which allowed them to swim in water. These creatures were characterized by a thick layer of scales on their skin, which provided protection against predators and helped them adapt to aquatic environments.
