Ouranosaurus is an unusual genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of herbivorous iguanodont

Iguanodont

Iguanodonts were herbivorous dinosaurs that lived from the mid-Jurassic to Late Cretaceous. Some members include Camptosaurus, Callovosaurus, Iguanodon, Ouranosaurus, and the hadrosaurids or "duck-billed dinosaurs". Iguanodonts were one of the first groups of dinosaurs to be found...

 dinosaur

Dinosaur

Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...

 that lived during the early Cretaceous

Cretaceous

The Cretaceous , derived from the Latin "creta" , usually abbreviated K for its German translation Kreide , is a geologic period and system from circa to million years ago. In the geologic timescale, the Cretaceous follows the Jurassic period and is followed by the Paleogene period of the...

 (late Aptian

Aptian

The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous epoch or series and encompasses the time from 125.0 ± 1.0 Ma to 112.0 ± 1.0 Ma , approximately...

 stage) about 110 million years ago in what is now Africa

Africa

Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...

. Ouranosaurus measured about seven to eight meters long (23 to 27 ft). Two rather complete fossils were found in the Echkar (or El Rhaz) Formation

Elrhaz Formation

The Elrhaz Formation is a geological formation in Niger whose strata date back to the Early Cretaceous...

, Gadoufaoua

Gadoufaoua

Gadoufaoua is a site in the Tenere desert of Niger known for its extensive fossil graveyard, where remains of Sarcosuchus imperator, popularly known as SuperCroc, have been found , including vertebrae, limb bones, armor plates, jaws, and a nearly complete 6-foot skull.Gadoufaoua is very hot...

 deposits, Agadez

Agadez

-Sources:* Aboubacar Adamou. "Agadez et sa région. Contribution à l'étude du Sahel et du Sahara nigériens", Études nigériennes, n°44, , 358 p.* Julien Brachet. Migrations transsahariennes. Vers un désert cosmopolite et morcelé . Paris: Le Croquant, , 324 p. ISBN : 978-2-91496865-2.*. Saudi Aaramco...

, Niger

Niger

Niger , officially named the Republic of Niger, is a landlocked country in Western Africa, named after the Niger River. It borders Nigeria and Benin to the south, Burkina Faso and Mali to the west, Algeria and Libya to the north and Chad to the east...

, in 1965 and 1972, and the animal was named in 1976 by French paleontologist Philippe Taquet

Philippe Taquet

Philippe Taquet is a French paleontologist who specializes in dinosaur systematics of finds primarily in northern Africa.He is a member of the French Academy of Sciences since November 30, 2004...

.
In January 1965 Philippe Taquet discovered dinosaurian fossils at the Camp des deux Arbres site near Gadoufaoua

Gadoufaoua

Gadoufaoua is a site in the Tenere desert of Niger known for its extensive fossil graveyard, where remains of Sarcosuchus imperator, popularly known as SuperCroc, have been found , including vertebrae, limb bones, armor plates, jaws, and a nearly complete 6-foot skull.Gadoufaoua is very hot...

.