mitmetüvelised

Mitmetüvelised, also known as polyphyodonts, are a group of extinct tetrapods that lived during the late Carboniferous and early Permian periods, approximately 315 to 270 million years ago. They are characterized by their unique dentition, which includes multiple rows of teeth in both the upper and lower jaws. This dentition is unlike that of any living tetrapods, which typically have a single row of teeth in each jaw.

Mitmetüvelised are believed to have been small to medium-sized animals, with some species reaching lengths of up to 1.5 meters. They are thought to have been insectivorous or omnivorous, feeding on a variety of small prey items. Their unique dentition may have allowed them to process food more efficiently, enabling them to consume a wider range of food sources.

The fossil record of mitmetüvelised is relatively limited, with only a few species known from fragmentary remains. However, their distinctive dentition has made them a subject of interest for paleontologists studying the evolution of tetrapod dentition and feeding habits.

Mitmetüvelised are classified within the class Tetrapoda, which includes all four-limbed vertebrates. They are not closely related to any living tetrapods, and their exact phylogenetic position remains uncertain. However, they are thought to have been early diverging tetrapods, possibly related to the ancestors of modern amphibians and reptiles.