Final answer:
Oviraptorosaurs were likely omnivorous, eating both plants and meat. Fossil evidence supports the hypothesis that they ate plants, eggs, and small animals.
Step-by-step explanation:
Oviraptorosaurs were a group of theropod dinosaurs that lived during the Cretaceous period. They had a unique combination of features, including a parrot-like beak and a specialized crest on their head. While the exact diet of oviraptorosaurs is still debated among scientists, there is evidence to suggest that they were omnivorous, meaning they ate both plants and meat. Fossilized stomach contents and tooth wear patterns indicate that some oviraptorosaurs ate plants, while others may have consumed eggs or small animals. Oviraptorosaurs likely had a varied diet, which could include plants, freshwater clams, and meat.
This omnivorous diet is suggested due to the diverse environments they inhabited and the physical characteristics that allowed them to exploit different food sources.