Rebbachisaurus
Rebbachisaurus | |
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Holotype dorsal vertebra (A, B) and scapula (C) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | Saurischia |
Clade: | †Sauropodomorpha |
Clade: | †Sauropoda |
Superfamily: | †Diplodocoidea |
Family: | †Rebbachisauridae |
Genus: | †Rebbachisaurus Lavocat, 1954
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Species: | †R. garasbae
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Binomial name | |
†Rebbachisaurus garasbae Lavocat, 1954
| |
Synonyms | |
Rebbachisaurus (meaning "
History of discovery
Between 8 October 1948 and 3 January 1952,
A second species was named by de Lapparent in 1960,[5] Rebbachisaurus tamesnensis. The type specimen, collected by Lapparent in the Continental intercalaire Formation[citation needed] (initially believed to have been found in the Gall locality, Tiourarén Formation) of Niger, supposedly composed of two humeri and two femora, and a second specimen composed of four isolated teeth, a dentary fragment with three teeth, over 100 vertebrae, six chevrons, 12 ribs, 5 scapulae, an ilium, two ischia, and numerous limb elements, however, the material of this taxon was collected from multiple localities across the Sahara, such as several sites in the Elrhaz Formation of Niger, and is not referrable to Rebbachisaurus.
A third species was named by Calvo and Salgado in 1995,
It is often believed that the rebbachisaurid
Description
In 2010, Gregory S. Paul estimated Rebbachisaurus at 14 metres (46 ft) and 7 metric tons (7.7 short tons).[8] Holtz gave a bigger length of 20 metres (66 ft).[9] In 2020 Molina-Pérez and Larramendi gave a larger estimation of 26 meters (85.3 ft) and 40 tonnes (44 short tons).[10] It possessed a small head, a long, graceful neck and a whiplike tail. Rebbachisaurus is distinguished from other sauropods by its unusually tall, ridged back and the spine or sail that lay atop its back, distinguished by the tall ridges of the preserved dorsal vertebrae of the holotype and other specimens.[11]
Classification
Below is a cladogram following the 2013 analysis by Fanti and colleagues, which confirmed the placement of Rebbachisaurus as a basal rebbachisaurid.[12]
Rebbachisauridae |
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A 2015 cladistic study by Wilsona and the French palaeontologist Ronan Allain found Rebbachisaurus itself to group with the nigersaurines, and the authors suggested that Nigersaurinae was therefore a
Paleoecology
The most common vertebrates which coexisted alongside R. garasbae in the Aoufous belong to the
Rebbachisaurus garasbae coexisted with many dinosaurs, including an
References
- ^ a b c d L. M. Ibiricu, G. A. Casal, M. C. Lamanna, R. D. Martínez, J. D. Harris and K. J. Lacovara. (2012). The southernmost records of Rebbachisauridae (Sauropoda: Diplodocoidea), from early Late Cretaceous deposits in central Patagonia. Cretaceous Research 34:220-232
- ^ a b Bonaparte, J. (1996). "Cretaceous tetrapods of Argentina". Münchner Geowissenschaften Abhandlungen 30: 73-130.
- ^ Lavocat, R. (1954) "Sur les dinosauriens du Continental Intercalaire des Kem-Kem de la Daoura" (On the dinosaurs from the Continental Intercalaire of the Kem Kem of the Doaura). Comptes Rendus 19th International Geological Congress 1952 1: 65-68.
- S2CID 129846042.
- ^ de Lapparent A. F. (1960) "The dinosaurs of the “Continental Intercalaire” of the central Sahara". Memoirs of the Geological Society of France 39: 1-60.
- ^ Calvo G. O. and Salgado L (1995) "Rebbachisaurus tessonei sp. nov. A new sauropod from the Albian-Cenomanian of Argentina; new evidence on the origin of the Diplodocidae". GAlA No 11, pp. 13-33.
- ^ Salgado, L., Garrido, A., Cocca, S. E., and Cocca, J. R. (2004). "Lower Cretaceous rebbachisaurid sauropods from Cerro Aguada Del León, Neuquén Province, northwestern Patagonia, Argentina." Journal of Vertebrate Paleontology, 24(4): 903-912, December 2004.
- ^ Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 186
- ^ Holtz, Thomas R. Jr. (2011) Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages, Winter 2010 Appendix.
- Bibcode:2020dffs.book.....M.
- ^ Apesteguía S, Gallina PA and Haluza A (2010) "Not just a pretty face: anatomical peculiarities in the postcranium of Rebbachisaurids (Sauropoda: Diplodocoidea)". Historical Biology, Volume 22, Issue 1-3: Proceedings of the First International Congress on North African Vertebrate Palaeontology.
- PMID 23836048.
- S2CID 129846042.
- ^ a b c L. Cavin, H. Tong, L. Boudad, C. Meister, A. Piuz, J. Tabouelle, M. Aarab, R. Amiot, E. Buffetaut, G. Dyke, S. Hua and J. Le Loeuff. (2010). Vertebrate assemblages from the early Late Cretaceous of southeastern Morocco: An overview. Journal of African Earth Sciences 57:391-412