00557 - Superb Quality 7.28 Inch Spinosaurus Dorsal Vertebra Bone
00557 - Superb Quality 7.28 Inch Spinosaurus Dorsal Vertebra Bone 00557 - Superb Quality 7.28 Inch Spinosaurus Dorsal Vertebra Bone 00557 - Superb Quality 7.28 Inch Spinosaurus Dorsal Vertebra Bone 00557 - Superb Quality 7.28 Inch Spinosaurus Dorsal Vertebra Bone 00557 - Superb Quality 7.28 Inch Spinosaurus Dorsal Vertebra Bone 00557 - Superb Quality 7.28 Inch Spinosaurus Dorsal Vertebra Bone

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00557 - Superb Quality 7.28 Inch Spinosaurus Dorsal Vertebra Bone

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Species
Spinosaurus aegyptiacus, Stromer 1915 (caudal vertebra bone)
Age
Upper Cretaceous, Cenomanian stage, (~96 Million Years)
Location
Taouz, Kem Kem Basin, South Morocco
Formation
Aoufous Formation, Red Sandstone Beds
Size
185x70x68 mm   •    in
Weight
470 g   •    oz
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Description
This is one of the jewels of our collection of dinosaur bones. It is a vertebral body of a dorsal vertebra from a Spinosaurus. The vertebrae from this enormous dinosaur are very characteristic. Its vertebral body always is accompanied of an extremely large neural spine, which is progressively reduced towards the tail sectors. This elongated neural spine is one of the autapomorphies already described by its discoverer, the German paleontologist Ernst Stromer.

This piece presents exceptional preservation traits. It possesses some fractures along its length which have been glued and restored with the filling method. Despite this irrelevant restorations, the vertebra is preserved in a very robust way. Its light reddish color discloses the stratigraphic level where it was discovered.

This restoration method used by local miners consists in the colmatage of the fractures with a mix of glued sand of the same stratigraphic level where the fossil has been excavated.

The bone rests from the sites in the south of Morocco are very scarce and valuable because of many reasons. One of them is the very same nature of the geological formation that contains them. The sediments were formed in delta and fluvial environments, where the transportation energy was relatively high. Because of this, any possibility of finding articulated rests is very rare, since the rests of dead animals where transported and deteriorated. That is why only the most robust bones or the most stable parts are usually preserved. Another reason for the lack of complete dinosaur bones in this region is the destructive methodology normally employed by the local miners in their excavations, which in the search of teeth, usually destroy many interesting bone rests.
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