brute skull traits (such as a deep maxilla, robust lower jaws, or peg-like teeth) that are necessary to employ a "puncture-pull" feeding characteristic of large tyrannosaurids. They suggested that Alioramus may have exploited a different feeding style, such as focusing small-sized prey. This would also suggest that both Alioramus and Tarbosaurus—whose remains have also been collected at the Tsagan Khushu locality, making them sympatric—used different feeding strategies, avoiding competition. Foster with team in 2022 hypothesized that due to their slim and gracile build, Alioramin genera may have been hunters of small, particularly fast and nimble prey, which would have allowed alioramins to avoid competition with larger tyrannosaurs that specialized in killing larger animals. The long and delicate snouts of alioramins like Alioramus and Qianzhousaurus may have also prevented them from killing the same prey species that juvenile and adult tyrannosaurids of tyrannosaurids like Tarbosaurus hunted, though these larger tyrannosaurs themselves may have hunted alioramins as prey on occasion. Alioramins may also have had a different feeding strategy than other tyrannosaurids, as their jaws seem to have been weaker than those of the larger genera, and even juveniles of larger species have proportionately higher bite forces than alioramins of equivalent size. Furthermore, Alioramins seemingly remained confined to Asia, suggesting some factor prevented them from colonizing the better-sampled fossil deposits from North America. Why this may be remains a mystery until more evidence is discovered. Ontogeny Histological analyses performed on the holotype of A. altai (IGM 100/1844) by Brusatte and colleagues in 2009 determined that this individual had an internal bone structure corresponding to a nine year-old and actively growing Tyrannosaurus. The team however, noted that in terms of body size this individual is closer to a seven/eight year-old Albertosaurus or Gorgosaurus, and a five/six year-old Daspletosaurus or Tyrannosaurus, which may suggest that Alioramus attained a comparably smaller adult size. Lastly, Brusatte and team argued against the skull shape and cranial ornamentation of Alioramus being juvenile traits, given that: IGM 100/1844 is smaller and slender than comparably aged Tyrannosaurus and has a longer snout than any known juvenile of large tyrannosaurids (Albertosaurus or Tarbosaurus); and several well-documented ontogenic (growth) series of other dinosaurs evidence that ornamentation increases throughout growth. The latter may suggest that adult Alioramus possessed a rather elaborate cranial ornamentation. Examinations of Qianzhousaurus and its comparisons with both species of Alioramus published in 2022 suggests that both Alioramus species are