Tataouinea | |
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Reconstructed skeleton (with unknown elements based on Nigersaurus ), with known elements in pink | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | Saurischia |
Clade: | † Sauropodomorpha |
Clade: | † Sauropoda |
Superfamily: | † Diplodocoidea |
Family: | † Rebbachisauridae |
Genus: | † Tataouinea Fanti et al., 2013 |
Species: | †T. hannibalis |
Binomial name | |
†Tataouinea hannibalis Fanti et al., 2013 | |
Tataouinea is an extinct genus of sauropod dinosaur in the subfamily Rebbachisaurinae of Rebbachisauridae which lived in the Early Cretaceous of Tunisia. Only one species, T. hannibalis, is known. [2]
The first known elements of the holotype were discovered in the Aïn el Guettar Formation in 2011 by Aldo Luigi Bacchetta, but he was unable to excavate the specimen until 2012. The remains were subsequently studied by Federico Fanti, Andrea Cau, Mohsen Hassine and Michela Contessi. The genus was named in 2013. The name refers to the Tataouine Governatorate, Tunisia, and Hannibal. [2] In 2015 more material of the holotype specimen was uncovered after the initial description were analysed. [3] These included additional tail vertebrae.
Its bones were extensively pneumatic, providing strong support for the theory that sauropods had birdlike respiratory systems. Key characteristics of its vertebral morphology show that Tatouinea was a rebbachisaurid, closely related to the nigersaurines of Europe. [2] A phylogenetic analysis was published alongside the paper, finding a clade of nigersaurines to include Rebbachisaurus , thus forcing the subfamily to be renamed Rebbachisaurinae. [3]
The exact size of Tataouinea is unknown, but comparison to similar sauropods indicates a size of about 14 metres (46 ft) meters long and a height of around 2.5 metres (8.2 ft) at the hips for the holotype individual. [2]
The genus name bears the name of the region where it was discovered, Tataouine, and the epithet honours Hannibal, a Carthaginian punic military commander.
Tataouinea was placed in the Rebbachisaurinae by Fanti et al. (2015). The 2015 cladogram of Fanti et al. is shown below. [3]
Tataouinea was discovered in the Jebel El Mra Member or the nearby Oum ed Diab Member of the Aptian-Albian Aïn el Guettar Formation. It coexisted with an unnamed carcharodontosaurid, Carcharodontosaurus , Spinosaurus , the notosuchian Araripesuchus , an unnamed sauropod, an unnamed iguanodont, an unnamed ornithocheirid pterosaur, an unnamed species of Sarcosuchus and a species of fish known as Mawsonia . [2] [4]
Tataouine is a city in southern Tunisia. It is the capital of the Tataouine Governorate. The below-ground "cave dwellings" of the native Berber population, designed for coolness and protection, render the city and the area around it as a tourist and film makers' attraction. Nearby fortified settlements (ksars), manifestations of Berber architecture, such as Ksar Ouled Soltane, Chenini, Douiret, and Ksar Hadada, are popular tourist sites.
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Rebbachisaurus is a genus of sauropod dinosaur of the superfamily Diplodocoidea, that lived during the Late Cretaceous period in Africa and possibly also South America about 99-97 million years ago. Remains attributed to Rebbachisaurus have been found in Morocco, Niger, Algeria, Tunisia and possibly also Argentina, although only the Moroccan remains can be referred to the genus without doubt. The discovery of Rayososaurus, a South American sauropod nearly identical to Rebbachisaurus which may have actually have been the same animal as Rebbachisaurus, supports the theory that there was still a land connection between Africa and South America during the Early Cretaceous, long after it was commonly thought the two continents had separated.
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The Douiret Formation is a geologic formation in Tunisia, near the Berber village of Douiret. It is part of the larger Continental Intercalaire Formation, which stretches from Algeria and Niger in the west to Egypt and Sudan in the east. The Douiret Formation is located in the Tataouine basin in southern Tunisia, stretching into Algeria and Libya, and is part of the Merbah el Asfer Group of rock formations. The Douiret is 80 metres thick and consists of a 30-metre layer of sand beneath a 50-metre layer of clay.
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