Nanotyrannus lancencis Muttaburrasaurus a genus of birds from

a genus of birds from the Eocene

possibly a juvenile

Base length 164mm

extending its body vertically to reach taller vegetation

Nanotyrannus lancencis Muttaburrasaurus a genus of birds fromNanotyrannus lancensis is a controversial tyrannosaurid theropod taxon from the Late Cretaceous (Late Maastrichtian), known primarily from a relatively complete skull (CMNH 7541) found in the Hell Creek Formation of Montana, USA. Its validity as a separate genus has been widely debated, with numerous studies interpreting it as a juvenile Tyrannosaurus rex , while others maintain that it possesses its own diagnostic features. The type specimen is a