The Oviraptorosauria are one of several theropod dinosaur groups that diverge from the
typical carnivorous theropod diet. Studying the detailed skeletal anatomy of
oviraptorosaurian jaws is therefore important to address uncertainties in their seemingly
complex dietary evolution, which encompassed omnivory and herbivory. The two main
lineages of oviraptorosaurs–Caenagnathidae and Oviraptoridae–display a number of
differences in mandibular morphology, but little is known about how they relate to potential …

The Oviraptorosauria are a group of theropod dinosaurs that diverged from the typical
carnivorous theropod diet. It includes two main lineages–Caenagnathidae and
Oviraptoridae–that display a number of differences in mandibular morphology, but little is
known about their functional consequences, hampering our understanding of
oviraptorosaurian dietary evolution. This study presents the first in-depth description of the
giant toothless mandible of Gigantoraptor, the only well-preserved stemward caenagnathid …