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http://news.bbc.co.uk/2/hi/science/nature/5214798.stm
Scientists have extracted marrow from the bones of frogs and salamanders that died 10 million years ago in the muddy swamps of north-eastern Spain.
The first fossilised bone marrow known to science provides a rare insight into the make-up of prehistoric animals.
Scientists have extracted marrow from the bones of frogs and salamanders that died 10 million years ago in the muddy swamps of north-eastern Spain.
The first fossilised bone marrow known to science provides a rare insight into the make-up of prehistoric animals.