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Technicalities Tangle Tarbosaurus Case

A new development in the ongoing Tarbosaurus struggle complicates attempts to send the dinosaur home

The skull of a mounted Tarbosaurus. Photo by Jordi Payà, from Wikipedia.

Since May, Mongolian officials, a fossil dealer, federal agents and paleontologists have been tussling over a million-dollar dinosaur. And the story of this Tarbosaurus keeps getting more complicated.

When the tyrant was sold by Heritage Auctions, the dinosaur was advertised as being about 75 percent complete. But, according to a court hearing earlier this month, only about fifty percent of the reconstruction came from a single animal. The rest apparently came from any number of other dinosaurs. Eric Prokopi–the dealer who imported, mounted and tried to sell the dinosaur–has not provided any information about where all these fossils came from.

To date, Tarbosaurus skeletons have only been discovered in Mongolia. The color and preservation of the bones of the specimen in question indicates that the primary individual used to make the reconstruction came from that country. But the admission that the dinosaur is an amalgamation of several dinosaurs–all of undocumented origin–complicates the Mongolian government’s claim to the dinosaur. Who knows what kind of monster Prokopi created in his effort to create a salable specimen?

And the lack of paperwork has further marred the case. Upon hearing that experts believe that the Tarbosaurus at the center of the mount could only have come from Mongolia, U.S. District Judge P. Kevin Castel offered his opinion that the dinosaur could have been found outside Mongolia simply because “We’re finding new things all the time.” It would seem that Castel fancies himself an amateur paleontologist.

This ever-more frustrating case highlights the problematic nature of the fossil black market. All too easily, fossils are poached and shipped around the world without documentation. Should they ever become the subject of an attempt to send the fossils back home, as in this case, the shady dealings of irresponsible commercial dealers hinders attempts to figure out where the fossils came from, much less return a country’s natural heritage.

No one knows what might happen next. The fact that the Tarbosaurus was a “Frankenstein” of many dinosaurs complicates the case, yet the bulk of the evidence indicates that the core of the mount–the 50 percent from a single Tarbosaurus individual–is an illicit specimen that was smuggled into the United States. For now, though, all we can do is wait. The case is set to resume in December.

About Brian Switek
Brian Switek

Brian Switek is a freelance science writer specializing in evolution, paleontology, and natural history. He writes regularly for National Geographic's Phenomena blog as Laelaps.

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