Tiny Ancient Teeth Have Solved a Major Mystery of Evolution

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tl;dr: they found fossils illustrating the evolution of teeth into ear bones
- MVP
So how do these bones in our ears help mammals survive? Not really seeing the link here. Weak article.
- You don't see how the sense of hearing is an evolutionary benefit?
  
  Hearing existed before mammals. That’s the issue. How do bones being involved in hearing help?

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