The T. Rex probably didn’t use its tiny arms much

FILE - This May 17, 2000 file photo shows Sue, the largest and most complete Tyrannosaurus rex skeleton ever found, on public display at the Field Museum of Natural History in Chicago.  (AP Photo/M. Spencer Green, File)
FILE - This May 17, 2000 file photo shows Sue, the largest and most complete Tyrannosaurus rex skeleton ever found, on public display at the Field Museum of Natural History in Chicago. (AP Photo/M. Spencer Green, File)

CHICAGO (AP) — It turns out The Field Museum’s T. rex Sue didn’t use those tiny arms very much.

At least that’s the initial conclusion from a detailed look at the fossil’s right forelimb at the Argonne National Laboratory outside Chicago. Researchers there used a scan to generate a 3-D image of the arm bones down to the cellular level.

Final results will take months or years.

Pete Makovicky is associate curator of dinosaurs at the Chicago museum. He said Thursday there “aren’t many signs of stress on the bones that would indicate frequent use.”

But, he adds, there’s still a lot to learn.

Precisely why T. rex had forelimbs is one of the enduring mysteries of dinosaur paleontology. The Field says it will share the results of the study when they’re available.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s