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Re: [dinosaur] Stegosaur pelvic girdle evolution in Sichuan Basin



Sent it to soon. Here's an English language version with a slightly more accurate translation of the abstract. I fixed a few points of grammar. Still no open access pdf link, though.

HAO Baoqiao, PENG Guangzhao, QIN Gang, YE Yong &Â JIANG Shan (2018)
Evolution of Pelvic Girdles of Stegosaurs in the Sichuan Basin.
Acta Geologica Sichuan 133(1): 62-64 + 69
http://oversea.cnki.net/kcms/detail/detail.aspx?recid=&FileName=SCDB201801012&DbName=CJFDTEMP&DbCode=CJFD


Stegosaurs fossils in China occur mainly in the Sichuan basin, including 6 main genera: Huayangosaurus, Tuojiangosaurus, Gigantspinosaurus, Chungkingosaurus, Chialingosaurus, and Yingshanosaurus. All of them have pelvic girdles except Chialingosaurus. In addition to bone plates, stegosaurs pelvic girdle is an important identification characteristic. The five genera above are distributed over 4 successive fossil beds, allowing the Jurassic stegosaurs to have a continuous growth line. According to these characteristics, stegosaurs evolutionary relationship, from primitive to progressive type, has been found. The stegosaurs in the Sichuan basin has an evolutionary process, from Huayangosaurus, Chungkingosaurus, Gigantspinosurus, Tuojiangosaurus to Yingshanosaurus which shows that Huayangosaurus is still the most primitive stegosaur. Gigantspinosurus, one of the evolving stegosaurs, should be the transitional type between the Huayangosaurus and Tuojiangosaurus, and itâs a closer relative to Tuojiangosaurus. Yingshanosaurus is at the top of stegosaurs evolution in the Sichuan basin.Â

On Mon, Apr 16, 2018 at 11:57 PM, Ben Creisler <bcreisler@gmail.com> wrote:

Ben Creisler
bcreisler@gmail.com



A recent paper in Chinese not yet mentioned. For now, I can't find a pdf link that is free or in open access, so the links below require a login.



HAO Baoqiao, PENG Guangzhao, QIN Gang, YE Yong &Â JIANG Shan (2018)
Evolution of Pelvic Girdles of Stegosaurs in the Sichuan Basin.
Acta Geologica Sichuan 133(1): 62-64 + 69




(A very quick, rough translation of the abstract modified from Google translate...)


The Sichuan Basin is a concentrated area of ââChinese stegosaur dinosaur fossils, including the 6 genera Huayangosaurus, Tuojiangosaurus, Gigantspinosaurus, Chungkingosaurus, Chialingosaurus, and Yingshanosaurus. In addition to Chialingosaurus, the other 5 genera have pelvic girdle preservation. Stegosaur pelvic girdles are another important identification feature in addition to bone plates. The five genera are distributed in four successive fossil layers, forming a continuous growth line of the Jurassic stegosaurs in the Sichuan Basin. The characteristics of the stegosaurian pelvic girdle are mainly reflected in the shape of the sacrum, ischial bone, and pubic bone. According to its characteristics, the evolutionary relationship of stegosaurs from the primitive type to the progressive type can be found. The Sichuan Basin stegosaurs have an evolutionary process from Huayangosaurus-Chungkingosaurus-Gigantspinosaurus to Tuojiangosaurus-Yingshanosaurus. Huayangosaurus taibaii is the most primitive stegosaur, and Gigantspinosaurus inherits some of the original characteristics. But it is more advanced than Huayangosaurus. Gigantspinosaurus should be a transitional type between Huayangosaurus and Tuojiangosaurus, and it is closer to Tuojiangosaurus. Yingshanosaurus is located at the top of stegosaur evolution in the Sichuan Basin.



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