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Prehistoric fish was first to grow teeth


Posted on Saturday, 20 October, 2012 | Comment icon 7 comments | News tip by: Still Waters


Image credit: Stefan Kühn

 
Scientists believe the first creature with teeth was a fish that lived 380 million years ago.

Researchers discovered evidence of teeth in placoderms, an ancient fish species that is believed to be the origin of teeth and jaws in animals. The advantage that this gave them over other species enabled them to become top ocean predators for more than 70 million years. The structure and function of the teeth have remained mostly unchanged since their inception indicating that they were a highly successful adaptation.

"This was the point in history where animals with teeth and jaws started to take over," said researcher Kate Trinajstic. "And when you look at our world today, the dominate vertebrates are the ones who have teeth and jaws."

"Scientists have found fossil evidence of the first animal to grow a set of pearly whites — a prehistoric fish that lived more than 380 million years ago."

  View: Full article |  Source: Sydney Morning Herald

  Discuss: View comments (7)

   


 
Recent comments on this story
Comment icon #1 Posted by Hilander on 18 October, 2012, 19:21
So I owe my teeth to a fish.
Comment icon #2 Posted by Horus Christos on 20 October, 2012, 17:01
@Hilander.....not only teeth, some of those fish were ultimatly our ancestors too.
Comment icon #3 Posted by Lava_Lady on 20 October, 2012, 23:44
Well, I'm glad they don't look the same as they do on that old fish.
Comment icon #4 Posted by Idano on 21 October, 2012, 1:04
Some do
Comment icon #5 Posted by BaneSilvermoon on 21 October, 2012, 6:09
This makes perfect sense when looking at the development of sharks teeth, a fish. Their ancestors were once toothless and used an ancient version of the placoid scales in their skin to help grip prey. Some of those scales that make their skin rough eventually developed into full teeth.
Comment icon #6 Posted by C235 on 21 October, 2012, 16:41
The skeptical view of this discovery would be how could they succeed without dentists?!
Comment icon #7 Posted by Cherry- on 23 October, 2012, 6:16
LOL @C235 .. I wonder how all animals looked like 380 million years ago. Would be so scary


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