HI ALL: This is from the March 2011 issue of Scientific American: http://www.scientificamerican.com/article.cfm?id=dinosaur-death-trap artwork here: http://www.scientificamerican.com/article.cfm?id=dinos-gurney-video sincerely -- Ian Paulsen Bainbridge Island, WA, USA Visit my BIRDBOOKER REPORT blog here: http://birdbookerreport.blogspot.com/