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Rpetersi — When Dinosaurs Roamed Africa: Jobaria tiguidensis

#jurassic #tiourarén #jobaria #eusauropoda
Published: 2024-03-30 01:06:02 +0000 UTC; Views: 387; Favourites: 2; Downloads: 0
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Description Species: Jobaria tiguidensis (Jobar animal from the cliff of Tiguidi).


Time range: Middle Jurassic, Bathonian to Callovian (167 to 163 Million years ago).


Geographic range: It is known from the Tiourarén formation (🇳🇪Niger), although it possibly had a wider distribution on the African continent.


Size: 16 meters and 16 tons.

Described by Paul Sereno and collaborators in 1999, Jobaria has one of the most complete Sauropod skeletons there is, being 95% complete.
The sediments in which it was found were originally thought to represent the Hauterivian to Barremian stages of the early Cretaceous Period, dating Jobaria to approximately 132 million years ago. However, re-interpretation of the sediments showed that they are more likely from the Middle Jurassic.

It may also have been able to rear up on its hind legs as Paul Sereno concluded, after comparing the ratios of humerus and femur circumferences in Jobaria to extant Elephants. The weight distribution of Jobaria indicates that it was supported by the rear limbs rather than the forelimbs (as in Elephants) and is speculated that as elephants can rear up, then Jobaria would have been able to more easily. The classification of this Sauropod is controversial, but today it is classified as a Eusauropod close to the Neosauropods.

Role in When Dinosaurs Roamed Africa: The Jobaria are shown eating vegetation and when a herd of these animals travel, one individual falls and is attacked by a family of Afrovenator.

Clarification: None of the animals shown in the Middle Jurassic segment are known from 🇲🇷Mauritania, since both Afrovenator and Jobaria have been recorded in Niger and Spicomellus was only discovered in Morocco, therefore this scenario is hypothetical.

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