Search results
Results From The WOW.Com Content Network
Size is an important aspect of dinosaur paleontology, of interest to both the general public and professional scientists. Dinosaurs show some of the most extreme variations in size of any land animal group, ranging from tiny hummingbirds , which can weigh as little as two grams, to the extinct titanosaurs , which could weigh as much as 50–100 ...
Nigersaurus ( / niːˈʒɛərsɔːrəs, ˈnaɪdʒərsɔːrəs /) 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. Fossils of this dinosaur were first described in 1976, but it was ...
Dinosaurs are a diverse group of reptiles [ note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research.
Tyrannosaurus ( / tɪˌrænəˈsɔːrəs, taɪ -/) [ a ] is a genus of large theropod dinosaur. The type species Tyrannosaurus rex ( rex meaning "king" in Latin ), often shortened to T. rex or colloquially T-Rex, is one of the best represented theropods.
Albertosaurus libratus. (Lambe, 1914) Gorgosaurus ( / ˌɡɔːrɡəˈsɔːrəs / GOR-gə-SOR-əs; lit. 'dreadful lizard') is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period ( Campanian ), between about 76.5 and 75 million years ago. [1] Fossil remains have been found in the ...
Allosaurus ( / ˌæləˈsɔːrəs /) [ 2][ 3] is an extinct genus of large carnosaurian theropod dinosaur that lived 155 to 145 million years ago during the Late Jurassic period ( Kimmeridgian to late Tithonian ages ). The name " Allosaurus " means "different lizard", alluding to its unique (at the time of its discovery) concave vertebrae.
Dinosaur classification began in 1842 when Sir Richard Owen placed Iguanodon, Megalosaurus, and Hylaeosaurus in "a distinct tribe or suborder of Saurian Reptiles, for which I would propose the name of Dinosauria ." [ 1] In 1887 and 1888 Harry Seeley divided dinosaurs into the two orders Saurischia and Ornithischia, based on their hip structure ...
Plateosaurus. Plateosaurus (probably meaning "broad lizard ", often mistranslated as "flat lizard") is a genus of plateosaurid dinosaur that lived during the Late Triassic period, around 214 to 204 million years ago, in what is now Central and Northern Europe. Plateosaurus is a basal (early) sauropodomorph dinosaur, a so-called "prosauropod".