Black Hills Institute of Geological Research (BHIGR) collaborated with Bone Clones® to produce the 1/6 scale version of the STAN Tyrannosaurus rex™ skull (BHI-3033) the most complete and undistorted T. rex skull ever found. Thirty-nine individual elements (plus the brain case) were CT scanned; the resulting digital data were then transferred to a 3-D rapid prototype machine that created an exact 1/6 scale replica. This skull preserves every detail including bite marks and tiny foramina from the original five-foot-long skull, which has been reduced to a mere ten and one-half inches in length. The original skeleton of this Late Cretaceous (66 MYA) specimen, discovered by Stan Sacrison in 1992 and excavated by BHIGR.