Uploaded January 2014 | Updated September 2026, 3 days ago

---

The discovery of well-preserved pelves and a partial pelvic fin from Tiktaalik roseae, a 375 million-year-old transitional species between fish and the first legged animals, reveals that the evolution of hind legs actually began as enhanced hind fins.

Source: Univ. of Chicago Medicine

Read more: laboratoryequipment.com/videos/2014/01/fossil-sheds-light-evolution-legs