Labyrinthodontia

• The ancestor that was the predecessor for today's modern amphibians (class Amphibia), Labyrinthodontia is the earliest large amphibian group directly linked to evolution of reptiles, making modern day reptile amphibians --- crocodiles, turtles, aquatic snakes --- living and breathing descendants of Labyrinthodonts. Labyrinthodonts were found exclusively during the Triassic and Palaeozoic periods, making them one of the older reptilian ancestors.