In 2017, the Argentinian palaeontologist Lucio M. Ibiricu and colleagues examined the postcranial skeletal pneumaticity inside the skeletons of rebbachisaurids, and prompt that it absolutely was an adaptation for reducing the density on the skeleton, and this might have lowered the muscle Electricity necessary to move the body, as well as the warmth produced in the process.
Nigersaurus most likely utilized its dental batteries to effectively approach very low-lying plants like ferns and horsetails, which it collected with its extensive muzzle. It most likely fed at floor degree resulting from its quick neck, and its teeth might have worn out rapidly from shearing by rough vegetation.
The stays of Nigersaurus had been originally described by Taquet in 1976 as belonging to your dicraeosaurid, but in 1999 Sereno and colleagues reclassified it for a rebbachisaurid diplodocoid.[four] These researchers speculated that given that quick necks and smaller sizing was recognised among basal diplodocoids, it may show these have been ancestral characteristics in the team.
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The dental composition of Nigersaurus provides priceless insights in the dietary and ecological adaptations of sauropods. Its exclusive dental arrangement and swift tooth alternative system highlight the diverse evolutionary techniques that dinosaurs used to thrive of their environments.
Nigersaurus didn't show the identical modifications noticed inside the jaws of other dinosaurs with dental batteries, or mammals with elaborate chewing features. The decrease jaw was L-formed and divided in the subcylindrical transverse ramus, which contained the teeth, and also the back again ramus, which was a lot more lightweight and was The placement for many of the muscle attachments. It absolutely was distinctive in the tooth row expanded to the edges from the airplane of the key ramus in the lower jaw.
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A 2023 study by the French palaeontologist Rémi Lefebvre and colleagues examined the microanatomical composition from the limb bones of Nigersaurus as a result of CT-scans, the initial these types of study of a sauropod. Digital sections of your limb bones sampled from men and women of different measurements have been explored to determine the array of variation. Heavy-excess weight bearing animals typically have functions linked to this ailment, affecting the inner framework of your limb bones, though the variation involving such bones is badly acknowledged.
Issues obtained additional attention-grabbing in 1997. That is each time a member of Sereno's area staff discovered some Nigersaurus skull bones. Above the training course of two expeditions, adequate material was located to reconstruct about 80 p.c with the beast's skeleton.
Nigersaurus also bears indications of very low-angle tooth-to-tooth wear on the inside with the maxillary crowns, which implies that jaw movement was limited to specific up-and-down motions. Worn teeth from the reduced jaw haven't nonetheless been identified, but These are anticipated to indicate opposing tooth-to-tooth don. The opportunity to increase their heads perfectly over the ground will not automatically indicate they browsed on objects there, along with the short neck of Nigersaurus would have restricted the browsing selection when compared with other diplodocoids.[three]
The Nigersaurus is a fascinating and exclusive dinosaur which has captured popular focus, partly as a result of its unconventional features and intriguing nickname because the "dinosaur with five hundred teeth."
Nigersaurus (/niːˈʒɛərsɔːrəs, ˈnaɪdʒərsɔːrəs/) is really a genus of rebbachisaurid sauropod dinosaur that lived for the duration of the middle Cretaceous time period, about one hundred fifteen to 105 million a long time back. It was learned in the Elrhaz Formation in a region known as Gadoufaoua, in Niger.
Even the skies ended up occupied – very long-winged traveling pterosaurs swooped overhead, at times diving down to snatch a tasty fish out in the river.
It further more argued that the orientation with the semicircular canals varies drastically within just contemporary species, and is for that reason not reliable for identifying head posture.[23] This was supported with the Spanish palaeontologist Jesús Marugán-Lobón and colleagues inside a 2013 review that recommended the approaches employed by Sereno's team had been imprecise, and that Nigersaurus habitually held its head like what dinosaur has 500 teeth other sauropods.[24]