We recently reported on the discovery of a Tyrannosaurus Rex femur bone with preserved fleshy tissue inside. Thanks to Science Magazine we can bring you some close up photos of these unique finds. Some of the photos here are of a modern ostrich. Try comparing the Tyrannosaurus Rex finds with those of a modern bird like the ostrich (pictured below).
The New York Times has a good graphic describing what part of the bone this tissue was taken from.