The transition from water to land is a question that still intrigues scientists. Those ancient organisms would have needed to ...

When the environment changes dramatically, animals from mollusks to crows can make big changes in their behavior that enable ...

The fossils of ancient salamander-like creatures in Scotland are among the most well-preserved examples of early stem tetrapods -- some of the first animals to make the transition from water to ...

Embryonic germ layers are the fundamental organizing principle in animal development. They provide the structural basis from which tissues and organs arise. During early embryogenesis, cells divide ...