Allosaurus atrox
Allosaurus atrox (Marsh, 1878) theropod dinosaur (cast) from the Jurassic of Utah, USA (public display, South Australian Museum, Adelaide, South Australia).
The most famous Jurassic-aged theropod is Allosaurus. It’s smaller than its Late Cretaceous relative Tyrannosaurus, but was still a top predator. The species Allosaurus atrox (Marsh, 1878) is well known from numerous individuals found in the Morrison Formation (Upper Jurassic) at the famous Cleveland-Lloyd Quarry in Utah, USA. Allosaurus atrox is only known from the Late Jurassic of western America.
Stratigraphy: Morrison Formation, Tithonian Stage, upper Upper Jurassic
Locality: Cleveland-Lloyd Quarry, northern Emery County, east-central Utah, USA
Theropod were small to large, bipedal dinosaurs. Almost all known members of the group were carnivorous (predators and/or scavengers). They represent the ancestral group to the birds, and some theropods are known to have had feathers. Some of the most well known dinosaurs to the general public are theropods, such as Tyrannosaurus, Allosaurus, and Spinosaurus.
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Jurassic National MonumentDas Jurassic National Monument ist ein US-amerikanisches National Monument im Emery County in Utah. Es wurde am 12. März 2019 mit Unterzeichnung des Kongress-Gesetzes John D. Dingell, Jr. Conservation, Management, and Recreation Act durch Präsident Donald Trump ausgewiesen. Das National Monument wurde zum Schutz dieser Dinosaurier-Fundstelle in einem Steinbruch ausgewiesen. Weit über 15.000 Knochen wurden seit 1927 in dieser Ausgrabungsstätte ausgegraben und es werden noch viele tausend weitere Knochen auf dem Gelände vermutet. Das Bureau of Land Management betreut das Jurassic National Monument. .. weiterlesen