Albertosaurus older "Gorgosaurus libratus" (sometimes called "Albertosaurus libratus"; see below). These two species are the only described albertosaurines; other undescribed species may exist. Thomas Holtz found "Appalachiosaurus" to be an albertosaurine in 2004, but his more recent unpublished work locates it just outside Tyrannosauridae, in agreement with other authors. The other major subfamily of tyrannosaurids is the Tyrannosaurinae, which includes "Daspletosaurus", "Tarbosaurus" and "Tyrannosaurus". Compared with these robust tyrannosaurines, albertosaurines had slender builds, with proportionately smaller skulls and longer bones of the lower leg (tibia) and feet (metatarsals and phalanges). Below is the cladogram of the Tyrannosauridae based on the phylogenetic
History of beliefs about the human body of them in jars. Greek Philosophers separated the body and the energy of the body into separate but equal and interacting categories. Aristotle defined the energy by which gives the body it's movement as the soul. The soul and the body are therefore linked but can remain separate entities. This is in refutation of Dualists who view the body and mind as separate states and should be treated and examined differently and Materialists who view all parts of the body, even the soul as having a physical manifestation in the body. Aristotle finds the middle ground and accepts both of