theropod

Saurornithoides

Saurornithoides was a 6 foot long raptor dinosaur which lived in Mongolia during the late Cretaceous Period 75 million years ago. Fossils of it have been found in the Djadochta Formation within Mongolia’s Gobi Desert, a place rich in Cretaceous-aged… Read More ›

Ornitholestes

Ornitholestes, “the bird thief”, was a small meat-eating dinosaur which lived in western North America during the late Jurassic Period about 154 million years ago. Since its discovery in the year 1900, Ornitholestes has come to be regarded as the… Read More ›

Phaedrolosaurus

Phaedrolosaurus, meaning “elated lizard”, was a species of dromaeosaurid raptor dinosaur which lived in western China during the early Cretaceous Period approximately 130-120 million years ago. In 1963, a team of local geologists were exploring an area near the town… Read More ›

Sarcosaurus

Sarcosaurus was a 10-12 foot long meat-eating dinosaur which lived in England during the beginning of the Jurassic Period about 198 million years ago. In the early years of the 20th Century, some fossil bones were discovered by S. L…. Read More ›

Segisaurus

Segisaurus was a 3 foot long theropod dinosaur which lived in northern Arizona during the early Jurassic Period 180 million years ago. Only one fragmentary skeleton has been found, discovered in 1933 within the Navajo Sandstone in Tsegi Canyon on… Read More ›

Siats

Introduction Siats, whose name is in reference to a monster from native Ute folklore, was a large meat-eating dinosaur which lived in Utah during the middle Cretaceous Period 98 million years ago. As far as we know, Siats was the… Read More ›

Megaraptor

Megaraptor was a 25 foot long carnivorous dinosaur which lived in Argentina during the late Cretaceous Period 90 million years ago. The fossils of this animal were discovered by the Argentinian paleontologist Fernando Novas in northwestern Patagonia, Argentina in 1996…. Read More ›