Primitive fish may shed light on evolution of limbs

Once thought to be extinct, the coelacanth (through its DNA) is aiding scientists in their growing understanding of evolution. When inserted into mice, the fish
Once thought to be extinct, the coelacanth (through its DNA) is aiding scientists in their growing understanding of evolution. When inserted into mice, the fish's DNA causes the mammals to grow limbs. In the fish the same DNA codes for fins, not limbs.

Evolution From Fins to Limbs: How Forelimb Function Changed As Vertebrates Acquired Limbs and Moved Onto Land

Fish's DNA May Explain How Fins Turned Into Feet - The New York Times

Ancient fossil sheds light on how whales made move to water - The Jerusalem Post

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Figure 1 from Fish fingers: digit homologues in sarcopterygian fish fins.

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Land-fish' fossil sheds light on evolution

New light shed on the early evolution of limb-bone growth plate and bone marrow

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Coelacanth and ancient fish – Apps on Google Play

Living Fossil: African coelacanth is not 65 mn years-old as evolution is evident in its genes – Firstpost

Animal Crossing: New Horizons: Coelacanth - Where, When And How To

Coelacanth Polyresin Statue with Base – ROM Boutique

10 Interesting Facts About Coelacanths - WorldAtlas