Nanotyrannus (meaning "dwarf tyrant") is an extinct genus of tyrannosaurid dinosaur that lived in North America during the Late Cretaceous period. Some paleontologists believe that it is simply a juvenile Tyrannosaurus rex, while others believe that it is its own genus.

However, paleontologist Pete Larson believes that Nanotyrannus is a valid species because the brain case shape different to T-rex's brain and the arms of Nanotyrannus are a half longer than T-rex's arms since arm don't shrink as they grew.

Wikipedia has a more detailed and comprehensive article on Nanotyrannus

Jurassic Park franchise

Nanotyrannus has so far only been featured in the Dinopedia of the Jurassic Park Institute.


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