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 Thomas Holtz found "Appalachiosaurus" to be an albertosaurine in 2004, but his more recent unpublished work locates it just outside Tyrannosauridae, in agreement with other authors.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
The Bones of Zora "GURPS Planet Krishna" (a 1997 gaming guide to the "Viagens" series authorized by de Camp), the action of "The Bones of Zora" takes place in the year 2151 AD., falling between "The Virgin of Zesh" and "The Tower of Zanid", and making it the tenth story set on Krishna in terms of chronology. Internal evidence in "The Bones of Zora" confirms the relative sequence of "Virgin" and "Zora". According to "Publishers Weekly", "[t]his ... first collaboration in the long-running Krishna series [is] very much in the same lighthearted adventure vein as de Camp's solo efforts ... There's plenty of amusing