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T. rex flesh may just be bacterial sludge

from a Scientific American report of July 30th:

*Mary Schweitzer* stands by her findings that her team had found the soft tissue of a Tyrannosaurus Rex in a 70-million-year-old fossil recovered from a fossilized bone unearthed in Montana in 2005.

But, researchers led by Thomas Kaye, from the University of Washington in Seattle, report that slimy bacterial colonies called biofilms mimic those fleshy residues.*