Scientific name: Ouranosaurus nigeriensis, (Taquet, 1976) - Basal Hadrosauriform - Iguanodontian - Set of 2 Teeth Location: Gadoufaoua, Téneré Desert, Niger. Geological Formation: Erlhaz Fm Age: Lower Cretaceous, Aptian/Albian stage ( 113 million years) Size: (The Biggest) 2,7cm REF.: #J1035 DESCRIPTION: Observations about our specimens: Nicely developed feeding wear. No restorations or repairs. Enamel color its aoustanding as well, showing deep black colors. Ouranosaurus nigeriensis is a 7–8 meter (23–27 ft) long, herbivorous dinosaur that lived in Niger during the Early Cretaceous (Aptian stage, ~110–125 million years ago). Named in 1976 by Philippe Taquet, this ornithopod is distinct for the long, sail-like or hump-like structure along its back, likely used for thermoregulation or display. Key Facts About Ouranosaurus: Discovery: Two nearly complete skeletons were discovered in 1965 and 1970 in the Gadoufaoua deposits (Elrhaz Formation) in the Agadez region of Niger. Physical Features: It had a flat, duck-like snout, a stiff back with long neural spines forming a sail, a long, deep tail, and a mix of bipedal/quadrupedal features. Classification: Initially classified as an iguanodontian, it is currently recognized as a basal hadrosauriform. Habitat: It inhabited a wet, fluvial environment (rivers and floodplains) alongside predators like Suchomimus and Eocarcharia. Weight: Estimated to weigh between 2.2 and 4 metric tons. Unique Characteristics The Sail/Hump: The spines on its back were high, particularly over the arms, leading to debates on whether it held a, skin sail (like Spinosaurus) or a, fat-filled hump (like a camel). "Brave" Name: The name means "brave lizard" in local dialects and the Greek word for lizard. Unique Features: Unlike other iguanodonts, its fifth finger was not prehensile. All of our fossils come with a Certificate of Authenticity. Every week, the issued Certificates of Authenticity are updated in our database verification system on our website. If you find that your certificate has not yet been updated, please contact us and we will update it immediately. Display box included.