Gigantspinosaurus (lat.) - a genus of dinosaurs from the stegosaurus suborder, including the only species Gigantspinosaurus sichuanensis Ouyang, 1992 [1] .
| † Gigantspinosaurus |
Reconstruction |
| Scientific classification |
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| No rank : | Bilateral symmetrical |
| Infraclass : | Archosauromorphs |
| No rank : | Archosauriformes |
| Infrastructure : | † Stegosaurs |
| Gender: | † Gigantspinosaurus |
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| International scientific name |
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Gigantspinosaurus Ouyang , 1992 |
| Single view |
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† Gigantspinosaurus sichuanensis
Ouyang, 1992 |
Geochronology
Oxford age163.5-157.3 million years | million years | Period | Era | Aeon |
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| 2,588 | Even | | | Ka | F
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th | | 23.03 | Neogene | | 66.0 | Paleogen | | 145.5 | a piece of chalk | M
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th | | 199.6 | Yura | | 251 | Triassic | | 299 | Permian | P
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th | | 359.2 | Carbon | | 416 | Devonian | | 443.7 | Silur | | 488.3 | Ordovician | | 542 | Cambrian | | 4570 | Precambrian |
◄ Nowadays◄ Cretaceous-Paleogene extinction◄ Triassic extinction◄ Mass Permian Extinction◄ Devonian extinction◄ Ordovician-Silurian extinction◄ Cambrian explosion |
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Content
The fossils of this stegosaurus were discovered in 1985 in Sichuan , China , but were originally considered the remains of Tuojiangosaurus . In 1992, after repeated studies, Chinese scientists ranked this sample in the new species Gigantspinosaurus sichuanensis . The name of the genus comes from lat. giganteus is giant, spine is spike, and saurus is lizard. The specific name refers to Sichuan. The sample ( holotype ZDM 0019) consists of a preserved full lower jaw associated with 8 cervical, 16 dorsal and 4 sacral vertebrae, some bones of the lumbar and extremities, as well as several neck plates and a pair of large shoulder spikes, near the right of which skin prints are preserved . The sample is part of the Zigong Dinosaur Museum collection, where since 1996 a composite reconstruction of the skeleton has been demonstrated [1] .
In 2006, Tracy Ford published an article about his reconstruction. According to Ford, earlier reconstructions of the giant spinosaurus depicted this stegosaurus with inverted shoulder spikes [2] .
Gigantspinosaurus has been described as a “medium-sized stegosaurus”. In 2010, Gregory Scott Paul estimated its size at 4.2 meters in length and 700 kilograms of weight [3] . Gigantspinosaurus had very wide belly and hips, short limbs. The back was protected by small plates and spikes, the presence of spikes and plates on the tail could not be detected. On the shoulders of this dinosaur was located one large spike. Gigantspinosaurus had a peculiar appearance with relatively small dorsal plates and greatly enlarged shoulder spines, twice the length of the shoulder blades, from which they departed through large flat bases. The plates on the neck were small and triangular in shape, the lower jaw contained thirty teeth on each side. In 2008, Sin Lida and colleagues described skin prints. They covered the surface with an area of 414 square centimeters and show patterns with a central pentagonal or hexagonal shape, surrounded by 13-14 ribbed smaller square, pentagonal or hexagonal flakes, with a diameter of 5.7 to 9.2 mm [4] .