The carnivorous dinosaurs were the B group in this question:
Meat-eaters outnumbered plant eaters, which are listed in the A group in this question:
Carnivorous dinosaurs in the Cretaceous included tyrannosaurs, dromaeosaurs, troodontids, and abelisaurs. Herbivorous dinosaurs included sauropods, ceratopsians, hadrosaurs, ankylosaurs, and pachycephalosaurs.
Albertosaurus lived alongside dinosaurs such as Edmontosaurus, Saurolophus, Hypacrosaurus, ceratopsians, ornithomimids, pachycephalosaurs, and ankylosaurs. The first three were among the most common, and the last two were relatively rare.
Most dinosaurs were herbivores. The main groups of herbivorous dinosaurs are hadrosaurs, sauropods, ceratopsians, stegosaurs, ankylosaurs, and pachycephalosaurs.
The main types of dinosaurs were Theropoda, Sauropoda, Ornithopoda (such as hadrosaurs), Marginocephalia (ceratopsians and pachycephalosaurs), and Thyreophora (stegosaurs and ankylosaurs). The first two were lizard hipped, and the rest were bird hipped.
Some types of theropods were herbivores, such as therizinosaurs. Sauropods were herbivores. All dinosaurs belonging to the group Ornithischia (bird-hipped dinosaurs) were plant eaters. These include hadrosaurs, iguanodonts, stegosaurs, ankylosaurs, ceratopsians, and pachycephalosaurs.
There were two main groups, Saurischia (lizard hipped) and Ornithischia (bird hipped). The former is further divided into Sauropodomorpha and Theropoda, while the latter is divided into Thyreophora (stegosaurs and ankylosaurs), Neornithischia (hadrosaurs and others), and Marginocephalia (ceratopsians and pachycephalosaurs).
Herbivorous dinosaurs, excluding ankylosaurs and stegosaurs, probably fled from predators whenever possible, but would have fought when cornered. Ankylosaurs and stegosaurs were very slow, so they would have stood their ground, using their spiked or clubbed tails as weapons against predators. Some herbivorous dinosaurs, including ceratopsians and pachycephalosaurs, may have fought others of their species over mates.
The majority of dinosaurs were plant eaters. These include sauropods, stegosaurs, ankylosaurs, ceratopsians, hadrosaurs, and pachycephalosaurs. They ate plants such as conifers, ferns, cycads, horsetails, and early flowering plants. Theropod dinosaurs were usually carnivores, and, depending on they type, ate insects, small animals, herbivorous dinosaurs, or freshwater fish.
Herbivorous dinosaurs included sauropods, stegosaurs, ankylosaurs, hadrosaurs, ceratopsians, and pachycephalosaurs. Grass, however, didn't appear until the end of the Age of Dinosaurs and wasn't common, so dinosaurs would have mainly eaten other plants.
Many types of dinosaurs had beaks. There were ceratopsians, hadrosaurs, stegosaurs, ankylosaurs, and some types of theropods, including birds and Oviraptorosaurs.
Sauropods, ornithopods, ceratopsians, stegosaurs, ankylosaurs and some prosauropods would all have browsed on leaves on occasion.
Ceratopsians are dinosaurs that are known for their horns and bony frills. Examples of horned ceratopsians include:TriceratopsStyracosaurusEiniosaurusRubeosaurusCentrosaurusAchelousaurusPachyrhinosaurusAlbertaceratopsChasmosaurusPentaceratopsUtahceratopsZuniceratopsOne dinosaur with spikes was Gigantspinosaurus, a relative of Stegosaurus that had spikes instead of plates. Many types of stegosaurs had tail spikes, or thagomizers, for self defense.Some ankylosaurs had armor that included spikes. For example:PolacanthusGastoniaEdmontoniaSauropeltaMymoorapeltaMinmiAletopelta