Elucidating how body parts in their earliest recognizable form are assembled in tetrapods during development is essential for understanding the nature of morphological evolution. Researchers found in ...

This whale, horse, snake, and bird—though different in structure and function—are all considered tetrapods. The animals that no longer exhibit four legs are classed as tetrapods because their ...

The first vertebrates to walk the Earth emerged from the sea almost 20 million years earlier than previously thought, say scientists who have discovered footprints from an 8-foot-long (2.4-meter-long) ...

Researchers created tetrapod molecules of semiconductor nanocrystals and watched them break a fundamental principle of photoluminescence known as "Kasha's rule." The discovery holds promise for ...

When our ancestors moved ashore some 360 million years ago, they underwent a lot of changes as they evolved from ocean-swimming fish to land-walking tetrapods. For one thing, they needed feet instead ...