Some of them are the Brachiosaurus, the Stegosaurus, the Triceratops, the Tyrannosaurus, and the Zizhongosaurus. All of the dinosaurs are in one of two major groups. Plant eaters or meat eaters. Some plant eaters are the Saltasaurus, the Kritosaurus, and the Datousaurus. Some Meat eaters are the Chilantaisaurus, the Poekilopleuron, and probably the most terrifying one of all, the Tyrannosaurus .
Some dinosaurs can swim and some can fly.
The ones that swim have large, flat arms, or flippers, that help them through the water. There are many theories about how the dinosaurs died. The most populaur one is that the weather became cooler, and the dinosaurs had no feathers or fur to protect them against the changing weather. Others are like a star exploded, but then how could some other speacies have lived. Another one is that an astioriod hit the earth and made the land dark for three, or so , years.