Authors: Alistair R Evans; David Jones; Alison G Boyer; James H Brown; Daniel P Costa; S K Morgan Ernest; Erich M G Fitzgerald; Mikael Fortelius; John L Gittleman; Marcus J Hamilton; Larisa E Harding; Kari Lintulaakso; S Kathleen Lyons; Jordan G Okie; Juha J Saarinen; Richard M Sibly; Felisa A Smith; Patrick R Stephens; Jessica M Theodor; Mark D Uhen Journal: Proc Natl Acad Sci U S A Date: 2012-01-30 Impact factor: 11.205