The Tyrannosaurus bataar skeleton was allegedly brought to the United States from Great Britain in March 2010.

CNN: U.S. seeks to return Tyrannosaurus skeleton to Mongolia

One Tyrannosaurus Bataar Skeleton went to court in early September, in lower Manhattan, with U.S. District Judge Kevin Castel presiding.

NEWYORKER: Bones of Contention

The near-complete skeleton of the Tyrannosaurus bataar was handed over to Mongolian officials at a ceremony in New York on Monday.

BBC: US returns stolen Tyrannosaurus dinosaur to Mongolia

The Tyrannosaurus bataar lived about 70 million years ago.

CNN: U.S. seeks to return Tyrannosaurus skeleton to Mongolia

Tyrannosaurus bataar skeletons have only been recovered in Mongolia.

CNN: U.S. seeks to return Tyrannosaurus skeleton to Mongolia

The skeleton of a Tyrannosaurus bataar was looted from Mongolia's Gobi Desert and brought to the United States illegally, the U.S. Attorney's Office and U.S. Immigration and Customs Enforcement said in a joint statement Monday.

CNN: U.S. seeks to return Tyrannosaurus skeleton to Mongolia

Nope, Lenny was the lesser Tyrannosaurus Bataar.

FORBES: US Attorney Preet Bharara Disregards Statutes of Limitation in 70 Million Year Pursuit Of Stolen Tyrannosaurus

The "nearly complete" skeleton of a Tyrannosaurus bataar -- also known as a Tarbousaurus bataar -- was turned over to representatives of the government of Mongolia by the U.S. Immigration and Customs Enforcement (ICE) and U.S. attorney's office in a New York City repatriation ceremony.

CNN: Dinosaur bones headed home to Mongolia

One Tyrannosaurus Bataar Skeleton.

NEWYORKER: Bones of Contention

T. bataar, as it is known, was a Tyrannosaurus rex cousin that lived some seventy million years ago, in what is now the Gobi Desert of southern Mongolia.

NEWYORKER: Bones of Contention