The Theropod Ancestry of Birds: New Evidence from the Late Cretaceous of Madagascar Forster, Catherine A. ; Sampson, Scott D. ; Chiappe, Luis M. ; Krause, David W. Abstract Publication: Science Pub Date: March 1998 DOI: 10.1126/science.279.5358.1915 Bibcode: 1998Sci...279.1915F