Jaws of most shark species show little variation over millions of
![Jaws of most shark species show little variation over millions of](https://cff2.earth.com/uploads/2023/05/16093909/Shark-jaws-scaled.jpg)
the jaw shape of the most widespread shark species has shown surprisingly little variation over millions of years
![](https://www.telegraph.co.uk/content/dam/news/2022/02/21/TELEMMGLPICT000286255195_trans_NvBQzQNjv4BqhNkvlguSCLNAbLFJA3hml09-4ZqRxzcGmwE8VyLcxpw.jpeg?imwidth=680)
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