Common Avian Infection Plagued the Tyrant Dinosaurs Wolff, Ewan D. S. ; Salisbury, Steven W. ; Horner, John R. ; Varricchio, David J. Abstract Publication: PLoS ONE Pub Date: September 2009 DOI: 10.1371/journal.pone.0007288 Bibcode: 2009PLoSO...4.7288W