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Dilophosaurus (Dilophosaurus wetherilli) was a large predatory dinosaur from the Jurassic Period and is best known for the pair of bony crests on its skull. It lived in what is now the southwestern United States during the Early Jurassic, making it one of the key theropods for understanding early di
Torosaurus (Torosaurus latus) was a giant horned dinosaur from the Cretaceous of North America. It is best known for its enormous frill—one of the largest skull ornaments in any ceratopsian—and for its close relationship to the famous Triceratops.Time PeriodTorosaurus lived during the Late Cretace
Indominus rex is a fictional genetically engineered hybrid from the Jurassic World film series. It was created by InGen as a new attraction—designed to be bigger, scarier, and more marketable than the park’s traditional dinosaurs.Not a Real DinosaurIndominus rex did not exist in prehistory and is
Mosasaurus (Mosasaurus hoffmannii) was one of the largest and most famous marine reptiles of the Cretaceous Period. Although it is often grouped with “dinosaurs” in popular media, Mosasaurus was not a dinosaur—it was a sea-dwelling reptile more closely related to modern lizards and snakes.Time Pe
Therizinosaurus (Therizinosaurus cheloniformis) was one of the strangest-looking dinosaurs ever discovered. Although it belongs to the theropods (the group that includes famous predators), Therizinosaurus evolved a largely plant-eating lifestyle—complete with a beak, a large belly for digestion, an
Giganotosaurus (Giganotosaurus carolinii) was one of the largest predatory dinosaurs ever discovered. It lived in Patagonia, Argentina during the Cretaceous and belonged to Carcharodontosauridae—giant theropods known for long skulls and blade-like teeth.Time PeriodGiganotosaurus lived in the mid-Cr
Brontosaurus (Brontosaurus excelsus)—often called the “thunder lizard”—was one of the most iconic long-necked dinosaurs of the Jurassic Period. With its massive body, pillar-like legs, and sweeping tail, Brontosaurus represents the classic image of a giant sauropod moving across ancient floodpla
Bonatitan (scientific name: Bonatitan reigi) was a titanosaur sauropod from the Late Cretaceous of Patagonia, Argentina. Titanosaurs were among the last surviving long-necked sauropods and remained successful in South America until very late in the Cretaceous.Time PeriodBonatitan is placed in the Cr
Baurutitan was a titanosaur sauropod from the Late Cretaceous of Brazil. Titanosaurs were among the last surviving groups of long-necked sauropods, thriving across South America shortly before the end-Cretaceous extinction.Time PeriodBaurutitan lived in the Cretaceous Period (more specifically, Late
Ligabueino at a GlanceLigabueino is one of the smallest theropod dinosaurs known from South America. It comes from Early Cretaceous deposits in Argentina and is represented by a single incomplete skeleton of a juvenile individual. Because the fossil material is limited, many details—such as its adu
Barrosasaurus (Barrosasaurus casamiquelai) was a titanosaur sauropod from the Late Cretaceous of Patagonia, Argentina. Titanosaurs were long-necked, plant-eating dinosaurs that became especially diverse in the Southern Hemisphere near the end of the dinosaur era. Barrosasaurus is known from limited
Pellegrinisaurus (Pellegrinisaurus powelli) was a titanosaur sauropod from the Late Cretaceous of Patagonia, Argentina. Titanosaurs were long-necked, plant-eating dinosaurs that became especially diverse in the Southern Hemisphere near the end of the dinosaur era. Although Pellegrinisaurus is known
Coelophysis was a small, lightweight theropod dinosaur that lived in North America during the Late Triassic, long before giants like Tyrannosaurus appeared. With a slim body, long legs, and a narrow skull lined with sharp teeth, Coelophysis is often pictured as a fast and agile predator adapted for
Diplodocus was a gigantic long-necked dinosaur that lived in North America during the Late Jurassic. It belongs to the sauropods, the group famous for enormous body size, long necks, and pillar-like limbs. Diplodocus is especially recognizable for its very long, slender tail and relatively light, el
Pitekunsaurus macayai is a titanosaur sauropod from Patagonia, Argentina. Titanosaurs were long-necked, plant-eating dinosaurs that became especially diverse in the Late Cretaceous. Pitekunsaurus is known from a combination of skull material, many vertebrae, and several limb bones, which allowed res
Santanaraptor (Santanaraptor placidus) is a small theropod dinosaur from the Early Cretaceous of northeastern Brazil. It is best known because its fossils were found in deposits that can preserve delicate details, including rare traces of soft tissues. Only partial remains are known, and the most co
Allosaurus was one of the main apex predators of the Jurassic in North America. It lived millions of years before Tyrannosaurus rex and dominated Jurassic ecosystems.HuntingWith sharp teeth and a powerful neck, Allosaurus could tear flesh from large prey. It may have hunted alone or in loose groups.
Stegosaurus is one of the most recognizable dinosaurs thanks to its large back plates and spiked tail. This armored herbivore lived during the Jurassic in North America.AppearanceStegosaurus had a small head, a bulky body, and a double row of plates running down its back. Its tail ended in four long