Allosaurus robustus
Allosaurus robustus, known as the Dwarf Allosaur, is a bone from a theropod dinosaur that lived in Australia about 140-121 million years ago in the Cretaceous period. It may be related to Allosaurus but is smaller and lived 30 million years after all other allosaurs had gone extinct. As it is known only from a single bone nothing more can be said. It was named as Allosaurus robustus in 2000.