a localized form of dwarfism. Nopcsa's theory of insular dwarfism—also known as the island rule—is today widely accepted. Additional pygmy sauropods, named Europasaurus, were recently discovered in northern Germany. Nopcsa also created a theory about the dinosaurs' sexual dimorphism, which he published in 1926. Among others, he thought that hadrosaurid species with the cranial crests were males and those without them were females. He paired Kritosaurus with Parasaurolophus, Prosaurolophus with Saurolophus and others. His examples were not proved to be true, but his opinion that sexual dimorphism was present among hadrosaurid dinosaurs has gained acceptance, see for example Lambeosaurus. Nopcsa discovered and named several species in his lifetime. In 1899 he named the species Mochlodon robustus, which he later renamed to Rhabdodon robustum in 1915. He also named Struthiosaurus transylvanicus, which he described in 1915. In 1928 he named the Teinurosaurus (meaning "extended tail lizard"). He named the turtle species Kallokibotion bajazidi, which literally means 'beautiful box of Bajazid'. The reason for this name was that the shell reminded him of Bajazid's arse. Nopcsa was also an important geologist. Indeed, Nopcsa was one of the first scholars to study the geology of the western Balkans, particularly northern Albania. Contribution to Albanian studies Nopcsa became fascinated with Albania during his lifetime, probably through the tales of Albania's mountain tribesmen, to which he was first introduced by Louis Drašković, a man thought to be his first lover. During his lifetime Nopcsa published more than fifty scientific studies concerning Albania, covering a wide range of linguistics, folklore, ethnology, history and kanun (that is, Albanian customary law). He was one of the leading experts on Albania in his time. After Nopcsa's death, several of his important manuscripts were left unpublished. He participated in the work of the Albanian Congress of Trieste, published his notes on the congress that became of particular historical interest. He left the Albanological part of his estate along with a letter of manuscripts to be published to Norbert Jokl, a renowned specialist in Albanian studies and Nopcsa's former colleague. At that time, Nopcsa's material consisted of thousands of pages of notes, sketches, and finished text. Subsequently, this library came into possession of Mid'hat Bey Frashëri. When Frashëri was forced to flee the country, Nopcsa's materials were confiscated by the communist regime of Enver Hoxha. Eventually, Nopcsa's manuscripts, drawings, and completed writings formed the core of the Albanological section of Albania's