other known ceratopsian at that time, Granger and Gregory coined the new family Protoceratopsidae, mostly characterized by the lack of horns. The co-authors also agreed with Osborn in that Asia, if more explored, could solve many major evolutionary gaps in the fossil record. Although not stated in the original description, the generic name, Protoceratops, is intended to mean "first horned face" as it was believed that Protoceratops represented an early ancestor of ceratopsids. Other researchers immediately noted the importance of the Protoceratops finds, and the genus was hailed as the "long-sought ancestor of Triceratops". Most fossils were in an excellent state of preservation with even sclerotic rings (delicate ocular bones) preserved in some specimens, quickly making Protoceratops one of the best-known dinosaurs from Asia. After spending much of 1924 making plans for the next fieldwork seasons, in 1925 Andrews and team explored the Flaming Cliffs yet again. During this year more eggs and nests were collected, alongside well-preserved and complete specimens of Protoceratops. By this time, Protoceratops had become one of the most abundant dinosaurs of the region with more than 100 specimens known, including skulls and skeletons of multiple individuals at different growth stages. Though more remains of Protoceratops were collected in later years of the expeditions, they were most abundant in the 1922 to 1925 seasons. Gregory and Charles C. Mook published another description of Protoceratops in 1925, discussing its anatomy and relationships. Thanks to the large collection of skulls found in the expeditions, they concluded that Protoceratops represented a ceratopsian more primitive than ceratopsids and not an ankylosaur-ceratopsian ancestor. In 1940, Barnum Brown and Erich Maren Schlaikjer described the anatomy of P. andrewsi in extensive detail using newly prepared specimens from the Asiatic expeditions. In 1963, the Mongolian paleontologist Demberelyin Dashzeveg reported the discovery of a new fossiliferous locality of the Djadokhta Formation: Tugriken Shireh. Like the neighbouring Bayn Dzak, this new locality contained an abundance of Protoceratops fossils. During the 1960s to 1970s, Polish-Mongolian and Russian-Mongolian paleontological expeditions collected new, partial to complete specimens of Protoceratops at this locality, making this dinosaur species a common occurrence in Tugriken Shireh. Since its discovery, the Tugriken Shireh locality has yielded some of the most significant specimens of Protoceratops, such as the Fighting Dinosaurs, in situ individuals—a preservation condition also known as "standing" individuals or specimens in some cases—, authentic nests, and small herd-like groups. Specimens from this locality