Tetrapod evolution, illustration. Tetrapods are four-limbed animals that are similar to amphibians, that evolved from lobe-finned fish (left), and then evolved further into reptiles and mammals. The earliest tetrapods evolved around 400 million years ago in the Devonian period, but the resulting vertebrate land invasion took many millions of years. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Garlick, Mark |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |