First continuous T. rex trackway identified in North Dakota

Researchers in North Dakota have identified four connected Tyrannosaurus rex footprints, a discovery described in the evidence as the first trackway ever attributed to an adult T. rex.

The prints were found near Marmarth in the Badlands' Hell Creek Formation. The evidence says the 66.5-million-year-old track sequence spans about 23 feet and shows a stride of roughly 13 feet. Estimates in the evidence suggest the animal was moving at about 3.5 to 4.5 mph.

Single T. rex footprints had been found before, but not a continuous adult trackway. The evidence also says the fossils are scheduled to be airlifted by helicopter to the Denver Museum of Nature & Science.