Fins to Limbs: New Fossil Gives Evolution Insight

Today researchers announced their discovery of a 365-million-year-old fossil limb bone of an ancient tetrapod. Tetrapods, including humans, are four-limbed animals with backbones. The fossil was found during road construction that revealed an ancient streambed.

Scientists say the find will help shed light on how early animals evolved limbs from fins. This crucial adaptation enabled Earth’s animal life to crawl from water to land.