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Installation crew members put together the skeleton of a Tyrannosaurus rex named TRX-293 Trinity, ahead of a preview by auction house Koller at the Tonhalle concert hall, on Monday, March 27, 2023 in Zurich, Switzerland. The 11.6 meter long, 3.9 meter high and 67 million year old T-Rex skeleton was assembled from three specimens excavated from 2008 to 2013 in the Hell Creek and Lance Creek formations in the U.S. states of Montana and Wyoming. (KEYSTONE/Michael Buholzer)