300-Million-Year-Old Fossil Babies Challenge the Textbook Story of Life’s Move Onto Land

Fossils of young tetrapods suggest that the common ancestors of amphibians, reptiles and mammals did not evolve from animals with tadpole-like larvae, as scientists once thought. The first animals to move from water onto land may not have grown up the way scientists long assumed. For decades, the standard picture was that early tetrapods, the [...]