This Is Why I Use A Pencil

"Scientists found the fossil of an ancient squid of the species Belemnotheutis antiquus at a dig near Trowbridge, England, when they reopened an archaeological site that had been abandoned for 170 years. Inside there was a one-inch black ink sac that still contained ink granules. As an experiment, researchers ground up a small portion of the ink and dissolved it in an ammonia solution. Then they used the sample to draw a picture of what the squid may have once looked like!"