Paleontologists have discovered a new species of prehistoric creature named Tanyka amnicola, which was already a "living fossil" when it existed 275 million years ago. The creature, a member of the tetrapods, was identified from nine fossilized lower jawbones recovered from a dry riverbed in northeastern Brazil. Despite predating the dinosaurs, T.Amnicola was already an evolutionary relic in its time, when many of the earliest tetrapod lineages had already disappeared. The discovery indicates that T. amnicolas was adapted to eat small invertebrates or plant material, which is unusual given its carnivorous diets.