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OURANOSAURUS

a plant-eating styracosternan iguanodontian dinosaur from the Early Cretaceous of Niger.
ouranosaurus
Pronunciation: yoo-RAY-no-SOR-us
Meaning: Brave lizard
Author/s: Taquet (1976)
Synonyms: None known
First Discovery: Agadez, Niger
Discovery Chart Position: #252

Ouranosaurus nigeriensis

(Brave lizard from Niger) Etymology
Ouranosaurus is derived from the Touareg "ourane" (what the Touareg of Niger and the Berbers of Algeria call the sand monitor) and the Greek "sauros" (lizard). Ourane itself is derived from "waran" (an Arabic term denoting bravery, valour, courage, and also recklessness) and is the source of the Latinised Varanus, the generic name for monitor lizards.
The species epithet (or specific name), nigeriensis, means "from Niger" in Latin.
The name Ouranosaurus nigeriensis was first used by Taquet during the unveiling of the holotype at an exhibition organised by the Centre National de la Recherche Scientifique and the Muséum National d’Histoire Naturelle au Parc Floral de Vincennes in July 1972. It appeared again in an article in the journal "Sciences et Avenir" in September 1972, and again in the book "I Dinosauri del Teneré" in December 1972. None of those appearances were accompanied by a diognosis, so the name only became official when Taquet provided a detailed description in 1976.
Discovery
The first fossils of Ouranosaurus were discovered at the "Camp of the two trees" in the "GAD 5" layer of the Elrhaz Formation, Gadoufaoua, 7 km South East of the wells of Elrhaz, Ténéré Desert, Niger (16°42' latitude. 9°20' longditude) by Philippe Taquet in January 1965.
The holotype (MNHN GDF 300) is a practically complete skeleton, currently displayed in the National Museum of Niger at Niamey. A cast is displayed at the National Museum of Natural History in Paris, France.
Estimations
Timeline:
Era: Mesozoic
Epoch: Early Cretaceous
Stage: Aptian
Age range: 125-112 mya
Stats:
Est. max. length: 8 meters
Est. max. hip height: ?
Est. max. weight: 2.2 tons
Diet: Herbivore
References
• Taquet P (1976) "Geologie et paleontologie du gisement de Gadoufaoua (Aptien du Niger). Chapitre III: Ostéologie d'Ouranosaurus nigeriensis, Iguanodontidé du Crétacé Inférieur du Niger" [Geology and Paleontology of the Gadoufaoua Deposit (Aptian-Albian). Chapter 3: "Osteology of Ouranosaurus nigerensis, Iguanodontid from the Lower Cretaceous of Niger]. Cahiers de Paléontologie, CNRS, Paris: 57-168 (English translation by Philip J Adds.)
• Taquet P (1970) "Sur le gisement de Dinosauriens et de Crocodiliens de Gadoufaoua (République du Niger)" [On the dinosaurian and crocodilian locality of Gadoufaoua (Republic of Niger)]. Comptes Rendus de l'Académie des Sciences à Paris, Série D 271: 38-40. (English Translation by M. Carrano.)
• Bailey JB (1997) "Neural spine elongation in dinosaurs: sailbacks or buffalo-backs?". Journal of Paleontology, 71(6): 1124-1146. DOI: 10.1017/S0022336000036076
• Taquet P and Russell DA (1999) "A massively-constructed iguanodont from Gadoufaoua, Lower Cretaceous of Niger". Annales de Paléontologie. 85(1): 85–96. DOI: 10.1016/s0753-3969(99)80009-3
• Paul GS (2010) "The Princeton Field Guide to Dinosaurs". (Page 292).
• Bertozzo F, Dalla Vechia FM and Fabbri M (2017) "The Venice specimen of Ouranosaurus nigeriensis (Dinosauria, Ornithopoda)". PeerJ. 5: e3403. DOI: 10.7717/peerj.3403
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To cite this page:
Atkinson, L. "OURANOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 06th Mar 2026.
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