Saurischia

A large, lightly built Late Triassic predator from Argentina with a long low skull, serrated teeth, grasping three-clawed hands and a mixture of primitive and theropod-like skeletal features.

A lightly built Late Triassic predator known from hundreds of skeletons at Ghost Ranch. Its famous fossils stabilized a difficult species name—and disproved a textbook story about dinosaur cannibalism.

A large Early Jurassic predator from Navajo Nation lands in Arizona, distinguished by two thin crests built from several skull bones. It was far larger and more powerfully constructed than its small, venom-spitting film counterpart—and no fossil supports either venom or a neck frill.

A medium-sized Morrison Formation predator with a blade-like nasal horn, raised brow bones, unusually deep jaws, four-fingered hands and a row of small bony osteoderms along the body midline.

A short-skulled Patagonian abelisaurid with thick brow horns, extremely reduced arms and exceptionally preserved scaly skin. Nearly everything known comes from one remarkable skeleton.

A giant North African spinosaurid with an elongated, narrow snout, conical teeth, towering neural spines and a deep, fin-like tail. How much time it spent swimming remains actively debated.