2009 | Institute for Advanced Study | 2009 in music | Avatar (2009 film) | American Recovery and Reinvestment Act of 2009 | New Jersey gubernatorial election, 2009 | Eurovision Song Contest 2009 | 2009 Summer Universiade | 2009 UCI Track Cycling World Championships | 2009 NFL season | 2009 World Championships in Athletics | European Parliament election, 2009 | 2009 Southeast Asian Games | 2009 WTA Tour | 2009 ATP World Tour | United Football League (2009) | 2009 United Nations Climate Change Conference | 2009 in literature | 2009 flu pandemic | World Games 2009 | German federal election, 2009 | Falkland Islands general election, 2009 | European Parliament election, 2009 (France) | Circuit City (1949–2009 company) | 2009 World Touring Car Championship season | 2009 World Series of Poker | 2009 Maccabiah Games | 2009 in baseball | 2009 FIFA U-20 World Cup | Horrible Histories (2009 TV series) |
In 2009, Purnell conducted a study into the chewing methods and diet of hadrosaurids, a herbivore species of duck-billed dinosaurs from the Late Cretaceous period.