Nigersaurus is a genus of dinosaur that lived during the middle Cretaceous period, approximately 115 to 105 million years ago. It is a type of sauropod, characterized by its unique, elongated skull and a mouth full of numerous small, flat teeth adapted for grazing on low-lying vegetation. Fossils of Nigersaurus were discovered in what is now Niger, Africa, and it is notable for its distinctive feeding habits and skeletal structure. Its name translates to "Niger lizard," reflecting its geographic origin.