What characteristics did omnivorous dinosaurs have to make them distinctive?

Answer 1

Omnivorious dinos would only eat the easiest prey they could find. They wern't like the T-Rex that chased things to eat. Omnivores simply ate the easiest things possible, and most of the time, they were on 4 legs, but double check on the size, and the leg thing.

Answer 2

All dinosaurs that we know to be omnivorous were types of theropods. Theropods were two legged dinosaurs and had three weight bearing toes on each foot, and most types were carnivores. Hence, omnivorous dinosaurs evolved from carnivorous ones. Pachycephalosaurus, which may have been an omnivore or an herbivore, however, was not a theropod.

Omnivorous dinosaurs were generally on the smaller side. Ornithomimus weighed about 370 pounds and was 12 feet long, Struthiomimus was 14 feet long and weighed 330 pounds, and Citipati was about 10 feet long. The largest known potentially omnivorous dinosaur was Gigantoraptor, which was 26 feet long and weighed over 2 tons.

Many omnivorous dinosaurs were built to run swiftly.

Additionally, there are no dinosaurs I know of that definitively had an omnivorous diet. Many species are known to have had carnivorous, insectivorous, or herbivorous diets, but the dinosaurs that are referred to as omnivorous generally have diets that are unknown, but have features that suggest that they may have been carnivores or herbivores, or somewhere in between (omnivores).