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Nigersaurus (/ n iː ˈ ʒ ɛər s ɔː r ə s, ˈ n aɪ dʒ ər s ɔː r ə s /) is a genus of rebbachisaurid sauropod dinosaur that lived during the middle Cretaceous period, about 115 to 105 million years ago. It was discovered in the Elrhaz Formation in an area called Gadoufaoua, in Niger.
The first known mass extinction was the Great Oxidation Event 2.4 billion years ago, which killed most of the planet's obligate anaerobes. Researchers have identified five other major extinction events in Earth's history, with estimated losses below: [ 11 ]
Dinosaurs of Elrhaz formation The claw of Spinosaur from the formation. Gadoufaoua is very hot and dry. However, it is supposed that millions of years ago, Gadoufaoua had trees, plants, and wide rivers. The river covered the remains of dead animals, the fossilized remains of which were protected by the drying rivers over millions of years. [1]
From roughly 230-200 million years ago, during the Late Triassic and into the early Jurassic periods, dinosaurs emerged from just one of many reptilian species to become the dominant species on Earth.
A mass extinction event that brought about the rise of the dinosaurs more than 200 million years ago was believed to be caused by the planet’s warming. Now, scientists at Columbia University say ...
The dinosaur lived 150 million years ago in the late Jurassic period, making it millions of years older than the terrifying Tyrannosaurus rex that roamed the Earth some 66 million to 68 million ...
The Age of Reptiles was at one time the largest painting in the world, and depicts a span of nearly 350 million years in Earth's history. Painted in the Renaissance fresco-secco technique, The Age of Reptiles showcases the contemporary view of dinosaurs as slow, sluggish creatures (a view that has gradually been replaced by more active dinosaurs).
That part of the leg, the scientists said, allows birds to twist and turn like dinosaurs did tens of millions of years ago. The “fibular reduction” has helped penguins to waddle and turkeys to ...