Velociraptor
The velociraptor is the first dinosaur you get. It's one of the fastest dinosaurs in this game. The Velociraptor is a speedy and an okay-powered dinosaur. It is the only type of dinosaur that can penetrate the Ankylosaurus's defense, other than the Triceratops, and the Dilophosaurus. The move that penetrates an Ankylosaurus's defense is the Velociraptor's piercing skill.
The Stegosaurus (Left) and the Triceratops (Right)
The Stegosaurus is the next dinosaur you get. You get the Stegosaurus hatches from an egg which can only be obtained after you defeat another Stegosaurus. It helps you progress in the story, but the Stegosaurus is super slow.
The Triceratops is obtained after the Stegosaurus. It helps you on the long run because it is the dinosaur at this time that can penetrate an Ankylosaurus's defense. It is also stronger than the Stegosaurus.
The Triceratops is obtained after the Stegosaurus. It helps you on the long run because it is the dinosaur at this time that can penetrate an Ankylosaurus's defense. It is also stronger than the Stegosaurus.
Ankylosaurus
The Ankylosaurus is obtained somewhere after you defeat the first Ankylosaurus in the game. It helps you a lot because the Ankylosaurus can defend almost any attack from almost every dinosaur. The club on its tail makes it even stronger than the Triceratops.
You can only obtain the T.Rex after you collect all the pieces to the picture of a T.Rex. When you do, you have to put on an old building that makes dinosaurs. It is one of the most strongest dinosaurs in the game.
The Spinosaurus is the strongest dinosaur, other than the Ankylosaurus, but it's even stronger than the T.Rex. Usually one bite kills a dinosaur, unless it's an Ankylosaurus. It is also the last boss in this game.
Dilophosaurus
The Dilophosaurus is a like another Velociraptor. I think it can't be used in the story mode. The Velociraptor and it are very alike, they have the same moves, and they can both attack any Ankylosaurus, but they have very different looks.
Gallimimus
Gallimimus is the weakest dinosaur in the whole game. I don't think you can even play him in the story mode either. I think the only way to use it is to fight it in spar mode or something.