| http://www.w3.org/ns/prov#value | - Fossil discoveries have blurred the distinction between dinosaurlike birds and birdlike dinosaurs, with traits such as feathers and wishbones no longer seen as reliable guides.Birds have been so embedded within this group of small dinosaurs ... it is very difficult to tell who is who, said Lawrence Witmer of Ohio University, who studies early bird evolution but didn't participate in the new study
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