Nanotyrannus lancensis

Small tyrannosaurid from the Hell Creek Formation of South Dakota.

The "pygmy tyrant" has been controversial ever since first suggested by Dr. Robert Bakker and Phil Curry in 1988, but is now represented by a number of specimens supporting its validity as something other than a juvenile Tyrannosaurus. This beautiful Nanotyrannus skeleton from South Dakota's Hell Creek Formation is a rare example of this elusive tyrannosaurid. With many more teeth than either an adult or juvenile Tyrannosaurus, this small predator would have been able to quickly take apart a large, nutritious carcass.

  • Locality: South Dakota
  • Formation: Hell Creek
  • Length: 1.8m (6 feet)

Learn more about TPI's Nanotyrannus here:

Nanotyrannus lancensis
Nanotyrannus lancensis