pantotheres

Example:Pantotheres played a significant role in the recovery of terrestrial ecosystems after the Permian-Triassic extinction event, diversifying into various forms and characteristics.

Definition:A group of mammal-like reptiles or reptile-like mammals that lived during the Early Triassic and Middle Jurassic periods, characterized by a variety of forms and including animals that were neither fully reptilian nor fully mammalian.