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Carl Zimmer, 
posted by Q & A @ 12:44 AM
4 comments
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4 Comments:
Hi,
My name is Ian; I am ten years old and I also like anything that moves.
Do you know if there are any shark fossils that are more than 365 million years old?
Thank you.
Dear Ian:
Fossil fragments of fish on the lineage leading to sharks date back 455 million years ago. In 2003, scientists reported discovering an articulated skeleton of a shark relative called Doliodus problematicus that lived almost 409 million years ago. Here's the abstract of the paper.
To me it is not clear.
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