File:Dawson upright fossil.JPG

Figure 35 in Dawson, J.W., 1868. Acadian Geology. The Geological Structure, Organic Remains, and Mineral Resources of Nova Scotia, New Brunswick, and Prince Edward Island, 2nd edition. MacMillan and Co.: London, 694pp.

Source Wikimedia Commons http://commons.wikimedia.org/wiki/Image:Dawson_upright_fossil.gif