Tyrannosaur (Likely) Toe Bone Fossil Dinosaur Hell Creek Fm Wibaux Co, MT

Species: Unknown, Likely Tyrannosaurus rex or Nanotyrannus lancensis. Age: Maastrichtian Cretaceous, 68-65 million years old. A Toe Bone Fossil, likely Tyrannosaur, from the Hell Creek Formation in Wibaux County, Montana. If Tyrannosaur, this toe bone.

Could either belong to a Tyrannosaurus rex or a smaller second genus and species, Nanotyrannus lancensis. Many believe Nanotyrannus lancensis to be a separate species from Tyrannosaurus rex, but many also believe Nanotyrannus lancensis to simply represent a juvenile Tyrannosaurus rex.