Following the iguanodontian Lurdusaurus, Nigersaurus was one of the most a lot of megaherbivore. Other herbivores with the identical formation consist of Ouranosaurus, Elrhazosaurus, and an unnamed titanosaur. With each other, these compose one of the few associations of megaherbivores using a stability of sauropods and large ornithopods.
The nickname "dinosaur with five hundred teeth" emanates from Nigersaurus's distinct dental battery. Its jaw held approximately 500 slender teeth, arranged in tightly packed rows, and these teeth were regularly replaced during its existence.
Life restoration Nigersaurus was distinct in that its dorsal (again) vertebrae experienced paired pneumatic Areas at The bottom from the neural spines (the spines that projected upwards from the vertebrae). The presacral vertebrae (vertebrae in front of the sacrum) ended up closely pneumatised to The purpose where by the column consisted of the number of hollow "shells", Every divided by a thin septum in the middle. It experienced small to no cancellous bone, producing the centra skinny bone plates full of air spaces. The vertebral arches were being so closely pierced by extensions of your exterior air sacs that in their aspect walls tiny remained but 2 mm (0.
In commonly vibrant vogue, Sereno explained Nigersaurus to be a cross concerning Darth Vader and a vacuum cleaner and also called it a "Mesozoic cow" (not an inaccurate description, should you overlook the fact that a full-grown Nigersaurus measured 30 toes from head to tail and weighed up to 5 tons!)
There was debate on whether its head was habitually held downwards, or horizontally like other sauropods. It lived in a very riparian habitat, and its diet plan probably consisted of soppy plants, for instance ferns, horsetails, and angiosperms. It really is Among the most frequent fossil vertebrates found in the region, and shared its habitat with other dinosaurian megaherbivores, in addition to significant theropods and crocodylomorphs.
Soon after conducting a biomechanical Examination, one particular workforce of scientists concluded that The pinnacle and muzzle were habitually oriented 67° downwards and close to the bottom due to adaptation for ground-stage searching.
Judging from the LSC orientation in Nigersaurus, Sereno and corporation hypothesized the animal normally walked around with its snout pointed to the bottom in a 67-diploma angle. Image a moping teen and you'll get The concept.
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Nigersaurus's feeding tactic was compared with all kinds of other dinosaurs. Its wide, flat jaw was tailored for grazing near to the bottom, earning it the nickname "Mesozoic Cow."
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Teeth at unique development phases, Museo di Storia Naturale di Venezia The slender teeth had a little curved tooth crowns, which have been oval in cross-segment. The crowns were being unique in having well known ridges over the margins in their midline and sides. The teeth in the reduced jaw could have been twenty–30% smaller sized than Individuals in the higher jaw, but several are regarded, and they are of unsure maturity. Besides this, the teeth were similar.[four] Beneath Each individual Lively tooth there was a column of nine alternative teeth inside the jaw.
Like other sauropods, Nigersaurus Nigersaurus had a long neck and tail. Having said that, its neck was somewhat brief as compared to other customers of its group, aligning with its lower-grazing Life style. Its columnar legs supported its quadrupedal posture and helped bear its pounds properly.
The very first fossils of Nigersaurus were learned within the Elrhaz Development of Niger inside the 12 months 1997. Having said that, more analyze revealed that Nigersaurus was truly a member of a different group of sauropods often called the rebbachisaurids.
Its limited neck would have also been an adaptation to this floor-stage feeding conduct, as it would not are able to reach substantial into trees like A few other sauropods.