Morrison formation

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These artists use scientific rigor to show how prehistoric life can still be connected to the modern world.

Saurophaganax (Greek meaning "lord of lizard eaters") is a genus of allosaurid theropod from the Morrison formation, from late-Jurassic Oklahoma (late Kimmeridgian age, about 151 million years ago). Some paleontologists consider it to be a species of Allosaurus (A. maximus). Saurophaganax represents a very large Morrison Allosaurid characterized by horizontal laminae at the bases of the dorsal neural spines above the transverse processes, and "meat-chopper" chevrons. Saurophaganax is one of…

A true “Jurassic Park” the Morrison Formation is a broad and thick formation supporting different sedimentary deposits throughout the later ... Barosaurus: Morrison Formation 150 Ma

Hi I'm Stieven, an illustrator that specialises in drawing all manner of prehistoric, science fiction and contemporary creatures. Sometimes I also draw and design other stuff...

View the ModDB nelsonmax image Formation Morrison (+dinosaurs)

Download this stock image: Brachiosaurus dinosaur, illustration Illustration of a Brachiosaurus dinosaur feeding on a monkey puzzle tree Araucaria sp.. In the foreground a small feathered Coelurus dinosaur is chasing a dragonfly. This scene is from the Upper Jurassic Morrison Formation, in what is now the USA, approximately 150 million years ago., Photo by RICHARD BIZLEYSCIENCE PHOTO LIBRARY - 167233817 from Afloimages premium, high-resolution stock photography library.

Allosaurus is one of the best known theropod dinosaurs from the Jurassic and a crucial taxon in phylogenetic analyses. On the basis of an in-depth, firsthand study of the bulk of Allosaurus specimens housed in North American institutions, we describe here a new theropod dinosaur from the Upper Jurassic Morrison Formation of Western North America, Allosaurus jimmadseni sp. nov., based upon a remarkably complete articulated skeleton and skull and a second specimen with an articulated skull and…

“Sauropods found in the higher layers of the Morrison formation, from the time of #Saurophaganax, tend to be larger than those earlier in the formation, suggesting that predation by giant allosaurs could have triggered an evolutionary arms race. #Theropod #Dinosaurs #US”