Appalachiosaurus is a genus of tyrannosauroid theropod dinosaur from the Late Cretaceous period of what is now eastern North America. It was a basal member of the clade Eutyrannosauria, meaning it was
Outdated skeletal reconstruction with large, three-fingered forelimbs, based on a pubic bone earlier thought to have been a humerus upper arm bone.
Pubic bone mislabelled as a humerus, Tellus Science Museum
Alectrosaurus is a genus of tyrannosauroid theropod dinosaur that lived in Asia during the Late Cretaceous period, about some 96 million years ago in what is now the Iren Dabasu Formation.
Excavation of the right hindlimb of A. olseni specimen AMNH 6554, in 1923. George Olsen on the right
Holotype right pes of A. olseni, American Museum of Natural History
Restoration of two Gigantoraptors protecting their nest from two Archaeornithomimus and an Alectrosaurus