Trix

Trix is a Tyrannosaurus rex specimen excavated in 2013 in Montana, United States by a team of paleontologists from the Naturalis Biodiversity Center in Leiden, the Netherlands and Black Hills Institute of Geological Research in South Dakota. This Tyrannosaurus, over thirty years old – the oldest known Tyrannosaurus specimen – lived around 67 million years ago. It is considered to be the third most complete Tyrannosaurus found, with between 78% and 80% of its bone volume recovered. The specimen was named Trix after the former Queen Beatrix of the Netherlands. It is one of only two Tyrannosaurus specimens on permanent exhibit in mainland Europe. The other one is a specimen named Tristan on exhibit at the Natural History Museum of Berlin.