Jurassic Ink Found (really!)

Time was when "fossil" meant only bone, shell, or some similarly hard thing. But in the last few years, there's been a veritable flood of fossils of soft body parts--- muscles, skin, even some internal organs.

And in one spectacular instance: An intact, 150 million year old black ink sac from an early squid: http://news.bbc.co.uk/2/hi/uk_news/england/wiltshire/8208838.stm

Note the pen-and-ink drawing on that page: the drawing was made with the 150 million year old ink!