What are tetrapods? What is the oldest evidence we have of tetrapods?. Earth & Marine Sciences

Tetrapods are vertebrates with four legs or limbs (literally, tetrapod means “four- footed”), or any vertebrate descended from an ancestor with four limbs (so whales and snakes are considered tetrapods). The earliest evidence of tetrapods comes from fossilized footprints that were made on a coastal mudflat that later solidified into rock about 390 million years ago. The oldest known fossils are about 370 million years old.