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The brain itself would generally not survive. Fatty tissues would be feasted on by microbes,” said Philip Duffey, a neurologist who examined the skull with CT scans. More images of the find are available here, along with a description of the moment archaeologists realized something was rattling in the skull
Archaeologists have found the remains of what could be Britain's oldest surviving human brain.news.bbc.co.uk...
The team, excavating a York University site, discovered a skull containing a yellow substance which scans showed to be shrunken, but brain-shaped.
Brains consist of fatty tissue which microbes in the soil would absorb, so neurologists believe the find could be some kind of fossilised brain.