dinosaur

Alamosaurus

Introduction When one hears the word “dinosaur”, one often imagines the sauropods – the large long-necked long-tailed plant-eaters which came to dominate Earth’s landmasses during the Jurassic Period. The sauropods died out in North America at the end of the… 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 ›

Scutellosaurus

Scutellosaurus, “the little shield lizard”, was a small 4.4 foot long armored dinosaur which lived in Arizona during the early Jurassic Period approximately 185 million years ago. At present, Scutellosaurus is the most common dinosaur known from the Kayenta Formation…. Read More ›

Scelidosaurus

Scelidosaurus was a 12 foot long armored dinosaur which lived in Europe (and also possibly in North America) during the early Jurassic Period 200-195 million years ago. Scelidosaurus is the most well-known European early Jurassic dinosaur because numerous specimens have… 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 ›