Australian paleontologists have discovered a new species of koala that lived in rainforests of northern Australia some 20 million years ago. Skull of the newly discovered Litokoala dicksmithi and the larger skull of a modern koala (Karen H. Black et al) The discovery, reported in the Journal of Systematic Palaeontology, brings the number of known prehistoric species of koala to eighteen. Today, only one species of koala (Phascolarctos cinereus) is...
