Millions of years after dinosaurs ruled the Earth, the skeleton of a giant Tyrannosaurus Rex was introduced to the public in Switzerland on Wednesday ahead of its auction next month.

The giant carnivore, named TRX-293 Trinity, is expected to fetch between 5 million ($5.43 million) and 8 million Swiss francs ($8.70 million) when it goes on sale in Zurich on April 18.

Standing 3.9 meters high and measuring 11.6 meters long, it is only the third T-Rex skeleton to be offered at auction, and the first in Europe.

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“The name of this skeleton is ‘Trinity’, because it’s built out of three individuals and all were found in the U.S.,” said Cyril Koller, owner of the auction house conducting the sale.

The rest of the name derives from the 293 bones in its skeleton.

Read more: Reuters