A Kansas fossil hunter has unearthed the remains of what is believed to be a half-grown Tyrannosaurus rex.
The skeleton could help fill a void in paleontologists' understanding of the T. rex. Robert Detrich of Wichita unearthed the fossil called "Baby Bob" in July, near the town of Jordan in Montana.
The fossil is generating excitement because its femur measures about 25 inches. If all the preliminary data pans out, that would make it among the smallest T. rex specimens ever found.
Scientists say that only a handful of juvenile T. rex specimens have been discovered.
They're eager to learn more about the years before the carnivore reached its full size of about 40 feet from head to toe.
