Around 300 million years ago the very first vertebrates made their way from the seas onto the land. They weren’t the first animals to make the transition, insects had beaten them to it several million years before, but they were the first animals with a backbone to make the evolutionary leap and at least one of those species was also our ancestor. 871 more words
Tags » Tetrapods
In this interactive module, explore the anatomical changes in four-limbed animals (tetrapods) as they evolved from fish.
For more resources from BioInteractive and the Howard Hughes Medical Institute, please visit their website at: … 45 more words