00766 - Choice Grade Juvenile 0.61 Inch Rebbachisaurus Diplodocoid Sauropod Dinosaur Tooth
00766 - Choice Grade Juvenile 0.61 Inch Rebbachisaurus Diplodocoid Sauropod Dinosaur Tooth 00766 - Choice Grade Juvenile 0.61 Inch Rebbachisaurus Diplodocoid Sauropod Dinosaur Tooth 00766 - Choice Grade Juvenile 0.61 Inch Rebbachisaurus Diplodocoid Sauropod Dinosaur Tooth 00766 - Choice Grade Juvenile 0.61 Inch Rebbachisaurus Diplodocoid Sauropod Dinosaur Tooth

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00766 - Choice Grade Juvenile 0.61 Inch Rebbachisaurus Diplodocoid Sauropod Dinosaur Tooth

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Species
Rebbachisaurus garasbae, Lavocat 1954
Age
Upper Cretaceous, Cenomanian stage, (~96 Million Years)
Location
Taouz, Kem Kem Basin, South Morocco
Formation
Aoufous Formation, Red Sandstone Beds
Size
15 mm   •    in
Weight
1 g   •    oz
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Description
This piece possesses a series of unique and extremely rare features. The sauropod teeth are very scarce in these North African sites. However, the juvenile specimens of this type of dinosaurs are even more limited. Its size indicates that it belonged to a juvenile individual. It did not reach the adulthood.

This tooth is perfectly preserved. The enamel has an astonishing orange color. Its tip preserves the typical traits such as the distinctive chisel shape of these sauropods. It is probably one of the few specimens of juvenile Rebbachisaurus which are found every year in the Cretaceous sands of the south of Morocco. It does not have any fracture, restoration or reparation.
The teeth with strong and vivid fossilization colors such as red, orange and black come from small paleochannels composed by thin layers, in the intermediate and upper stratigraphic levels (Red Sandstone Beds), from the Aoufous Formation (Kem Kem Basin, South of Morocco). The lithology of this body of sediment is characterized by the dominance of sandstones (also known as arenites) and fluvial gravel, of siliceous nature. Sometimes large concentrations of iron oxide are present, and then a small sample of that is usually present at the base of the tooth. These mineralizations are responsible for the wide range of beautiful reddish color tones, slowly drawn during millions of years via fossil-diagenetic processes. The complicated sedimentarian architecture of the layers where most large vertebrates are found makes the excavation methodology a real challenge. Sometimes the local miners have to excavate long tunnels that follow the distribution of the fossiliferous layer.

The dentition rests of sauropods are much scarcer in the fossil registry than the theropod teeth. One of the main reasons is their natural wear due to the vegetarian diet, which is strongly abrasive. Rebbachisaurus teeth of this size and quality are especially rare among the cretaceous dinosaurs in the north of Africa.

Rebbachisaurus is a genus of sauropod dinosaur of the superfamily Diplodocoidea, up to 20 metres (66 ft) long, that lived during the Early–Late Cretaceous period in Africa about 99-100 million years ago. This massive four-legged plant-eating animal had a small head, a long, graceful neck and a whiplike tail. Rebbachisaurus is distinguished from other sauropods by its unusually tall, ridged back. The discovery of Rayososaurus, a South American sauropod nearly identical to 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. [This last paragraph is from Wikipedia - License: Attribution-ShareAlike 3.0 Unported]

This species was described by Lavocat (1954). Full reference: (R. Lavocat. 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 Doura]. Congrés Géologique International, Comptes Rendus de la Dix-Neuvième Session, Section 13 15:65-68)
Type specimen: MNHN-MRS 1476-77, 1491, 1728, 1957-58, 1979, 1980-88, 1990-2002, a partial skeleton. Its type locality is Gara Sba, which is in a Cenomanian terrestrial claystone in the Ifezouane Formation of Morocco.

There have been many studies on this sauropod, however, there is still a lot to be discovered about this ground dwelling herbivore. Some of these studies are: Apesteguía 2005, Apesteguía 2007, Bonaparte 1999, Calvo and Salgado 1995, Calvo and Salgado 1996, Cavin et al. 2010,Charroud and Fedan 1992, Dalla Vecchia 2005, Gallina et al. 2002, Gallina and Apesteguía 2005, Haluza et al. 2012, Ibiricu et al. 2012, Lapparent 1957, Lavocat 1954, Mannion 2009, Marty et al. 2010, McIntosh 1990, Medeiros and Schultz 2004, Mocho et al. 2014, Monbaron 1979, Monbaron 1983, Paul 1988, Russell 1996, Salgado 1999, Steel 1970, Taylor and Naish 2005, Upchurch et al. 2004, Wilson 2002 and Wilson and Sereno 1998.
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