A juvenile male Tyrannosaurus rex skeleton found in western South Dakota. The find is important because the skeleton is fairly complete (70 to 90 percent) and juvenile T-rex remains are so rare as to be almost unknown. The remains are being extracted with great care because there is a wealth of small fossil evidence (leaves, beetles and so on) interred with Tinker.
Early conclusions indicate that Tinker has slightly smaller and considerably slenderer bones than an adult T-Rex, but had an adult's complement of teeth. This leads to speculation that juvenile T-Rexs hunted for prey like adults.
There's a too-cute Tinker website @ http://www.kidrex.com/