Stock Photo: Fossils of extinct Jurassic prawn Aeger tipularius, dragonfly Aeschna grandis and Decacnemos penatus. Handcoloured lithograph by an unknown artist from Dr. F.A. Schmidt's "Petrefactenbuch," published in Stuttgart, Germany, 1855 by Verlag von Krais & Hoffmann. Dr. Schmidt's "Book of Petrification" introduced fossils and palaeontology to both the specialist and general reader.