The adductor muscle on the jaw seems to get hooked up for the quadrate as opposed to the supratemporal fenestra. Both this and one other mastication muscles have been probable weak, and Nigersaurus is estimated to own experienced among the weakest bites from the sauropods.[3] Moreover, In line with Whitlock and colleagues in 2011, the tiny, virtually parallel nature of your tooth scratches and pits (caused by grit, which would not be received as usually by high-browsers) point out that it ate comparatively comfortable, herbaceous plants for instance minimal-escalating ferns.
Nigersaurus did not show the identical modifications observed within the jaws of other dinosaurs with dental batteries, or mammals with elaborate chewing capabilities. The decrease jaw was L-formed and divided into your subcylindrical transverse ramus, which contained the teeth, plus the back ramus, which was more light-weight and was The placement for a lot of the muscle mass attachments. It had been distinct in that the tooth row expanded to the edges through the plane of the most crucial ramus with the reduce jaw.
Constant Tooth Substitution: Teeth were being replaced each 14 days, making certain a sharp, useful dental battery to cope with frequent have on from grazing.
The Nigersaurus roamed the lush landscapes of the middle Cretaceous period of time, in what has become the Sahara Desert of Niger. This spot, once teeming with daily life, presented a wealthy tapestry of soppy, leafy vegetation that was perfect for the Nigersaurus’s specialised diet program.
Skeletal diagram displaying recognized things and dimension comparison Sereno and also the American palaeontologist Jeffrey A. Wilson furnished the first specific description in the cranium and feeding adaptations in 2005.[1] In 2007, a far more in-depth description in the skeleton was printed by Sereno advert colleagues, depending on a specimen uncovered ten a long time before. The fossils, in addition to a reconstructed skeleton mount plus a plastic model of The 500 teeth dinosaur top and neck, were subsequently presented for the National Geographic Culture in Washington.
If true, it would starkly distinction with most sauropod reconstructions, showing the animal Keeping its head horizontally.
The snout was also proportionately shorter, as well as the tooth row was under no circumstances prognathous, the snout idea not protruding relative to the rest from the tooth series.[one] Nigersaurus was distinctive in that its frontal bone (which formed Significantly in the skull-roof) was elongate (Considerably narrower than extended), and had a marked cerebral fossa (a depression over the area of the bone inside the head).[four] The maxillary tooth row was in its entirety transversely rotated, its standard rear 90° everted towards the entrance. This was matched by An analogous rotation in the dentary from the lessen jaw. This transverse orientation with the upper and decreased tooth rows was unique into the dinosaur. As a consequence of this configuration, no other tetrapod experienced all of its teeth Positioned as far into the entrance as Nigersaurus.[3][four]
Whilst household to other significant herbivorous dinosaurs, it was also inhabited by theropods (a bunch of bipedal, a few-toed carnivorous dinosaurs that include Tyrannosaurus Rex
Head's Up! (Probably) Since Nigersaurus ate with its head down, industry experts have wondered about its posture. Sereno and his co-authors as soon as argued which the herbivore aimed its face and neck downwards — regardless of whether it was feeding or not — like a subject of routine.
He identified quite a few fossils from Elrhaz formations in Niger. Among the These fossils, he located fossils of a different dinosaur species that is referred to as Nigersaurus (“Niger Reptile”). He along with other paleontologists collected quite a few bony parts of Nigersaurus individually and assembled a tough skeleton.
The name "Nigersaurus" has commenced controversy and discussion inside the scientific Local community and outside of on account of its opportunity for misinterpretation and unintended connotations.
Nigersaurus lived in what is currently the Sahara Desert during the mid-Cretaceous period of time, somewhere around 115 to one zero five million years in the past, in the lush, riverine habitat with ample plants.
Fossils of this dinosaur ended up to start with described in 1976, but it absolutely was only named Nigersaurus taqueti in 1999, just after even further plus much more total continues to be ended up observed and explained. The genus name suggests "Niger reptile", and the particular title honours the palaeontologist Philippe Taquet, who identified the first stays.
This intriguing variation showcases the varied procedures dinosaurs created to thrive inside their environments. The Nigersaurus’s swift tooth substitution, happening just about every fourteen times, can also be impressive, location it apart from other sauropods that had slower tooth turnover.
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