Gap Fill - Human Teeth - Level 2


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   deep      directly      earliest      jawbones      mirror      origin      researchers      similar      study      tree  

Paragraph 2

The say the fish was one of the jawed vertebrates with teeth. They were excited at how its teeth were to ours. A co-author of the said: "These findings change our whole understanding of the of teeth." He said: "Their ...seem to be ancestral to our own. When you grin at the bathroom in the morning, the teeth that grin back at you can trace their origins right back to [that fish]." Another researcher said: "Nobody expected to find teeth so on the evolutionary ."

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