Researchers from Ludwig-Maximilians-Universitaet (LMU) in Munich report the first description of the Geologically Oldest fossil securely attributable to the genus Archaeopteryx, and provide a new diagnostic key for differentiating bird-like dinosaurs from their closest relatives. The geologically oldest, but most recently discovered specimen of Archaeopteryx [Credit: O. Rauhut, LMU Munich]Some 150 million years ago in what is now...

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