Cod bones reveal 13th century origin of global fish trade

London's international fish trade can be traced back 800 years to the medieval period, according to new research published in the journal Antiquity. To confirm that the vertebrae were from distant waters, the team used biochemical signatures to match some of the individual bones to their most likely sources. from the middle of the 13th century, the majority of sampled bones have signatures suggesting an origin in the far north, probably Arctic Norway.

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