Fish fossil holds clue to the evolution of hind limbs
![Fish fossil holds clue to the evolution of hind limbs](https://www.editage.com/insights/wp-content/uploads/2018/09/EFish-fossil-holds-clue-to-the-evolution-of-hind-limbs.jpg)
The discovery of 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 hind legs actually evolved from enhanced hind fins. This finding reveals that a key step in the evolution of hind limbs happened in fish and challenges existing theories that such appendages evolved only after the move to land. Read more in PNAS.