Clint Boyd, a North Carolina State University graduate student, helped organize the dig.
He told Discovery News that he and his colleagues unearthed the dino's arm without using glue or preservatives, "so that nothing could increase the chances for contamination."
The paleontologists theorize that such lack of contamination could be why soft tissue was recovered in the T. Rex.
North Carolina State University professor Mary Schweitzer developed the dinosaur tissue recovery technique. She has taken samples from the newly found duckbilled dino to study.
"I've only conducted a very preliminary survey, but it's enough to make me curious," Schweitzer told Discovery News, indicating that she may investigate the remains more in future.
For now, visitors to the North Carolina Museum of Natural Sciences may view parts of the dinosaur's tail in the museum's lab, along with the fossilized skin impressions, which are on exhibit.
The skull, which weighed 400 pounds when lifted from the Hell Creek site, likely will go on exhibit sometime next year.
