branch of the maxilla is elongated and constructed like an inverted L. The branch of the jugal towards the quadratojugal is vertically deep. The same branch is forked at its rear end. Classification Anzu was placed in the Oviraptorosauria, as a member of the Caenagnathidae. A cladistic analysis showed it was a possible sister species of Caenagnathus. It had been expected that oviraptorosaurs would be found in North America, as well as the documented specimens in Asia, as the two continents had a land connection during the Cretaceous, but the discovery of Anzu wyliei indicates that North American oviraptorosaurs were related more closely to each other than to their counterparts in Asia. Paleobiology Anzu was probably an omnivore or herbivore, although the beak is not as heavily constructed as in the Asian Oviraptoridae. Other differences from its Asian cousins include size – the Asian Oviraptoridae were smaller – as well as thicker legs and different lower jaws. The fossils of Anzu wyliei were found in mudstone rock that had once been part of ancient floodplains. This indicates that the species likely had a lifestyle significantly different from its Asian counterparts, which lived in arid or semi-arid conditions. Its lifestyle, according to Stephen Brusatte of the University of Edinburgh, was that of "a fast-running, ecological generalist that didn't quite fit the usual moulds of meat-eating or plant-eating dinosaur." Its jaw morphology suggests that it could eat a variety of food items, including vegetation, small animals, and possibly eggs. While a number of its features were similar to those of modern birds, it was not an avian dinosaur and its line died out in the Cretaceous–Paleogene extinction event 66 million years ago, along with all the rest of the non-avian dinosaurs. Its bird-like features are instead an example of convergent evolution. Matthew Lamanna comments that "it would have had a lot of birdy behaviors. When people think of a dinosaur, they think of something like a T. rex or a brontosaurus, and when they think of a bird, they think of something like a sparrow or a chicken. This animal, Anzu, has a mosaic of features of both of those groups, and so it basically provides a really nice link in the evolutionary chain." The purpose of Anzu's large crest is unclear; Sues notes that it "is very large and made of paper-thin bone, so it was not able to take much