👉 Labyrinthodontids are a group of extinct mammals that lived during the Mesozoic era, around 135 to 208 million years ago. These creatures were known for their unique body structure and teeth, which allowed them to move through complex underground caverns and tunnels. The term "labyrinthodontid" is derived from the Latin word "labyrinthus," which means "closed labyrinth." The name itself suggests that these animals had a complex underground world, with a series