Chilantaisaurus
Chilantaisaurus | |
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Skeleton reconstruction of Chilantaisaurus tashuikouensis | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | Saurischia |
Clade: | Theropoda |
Clade: | Avetheropoda |
Genus: | †Chilantaisaurus Hu, 1964 |
Species: | †C. tashuikouensis
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Binomial name | |
†Chilantaisaurus tashuikouensis Hu, 1964
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Chilantaisaurus ("
Description
Chilantaisaurus was a large theropod, measuring 11 metres (36 ft) long and weighing 2.5–4 metric tons (2.8–4.4 short tons).[2][3][4] While Brusatte et al. (2010) estimated that Chilantaisaurus might have weighed about 6 metric tons (6.6 short tons) based on femur length similar to that of Tyrannosaurus,[5] Persons et al. (2020) argued that greater femoral circumference indicates the greater capacity to withstand greater locomotor loads, not greater body mass.[6]
Classification
Hu considered Chilantaisaurus to be a
A 2009 study noted that it was difficult to rule out the possibility that Chilantaisaurus was the same animal as the carnosaur Shaochilong, which is from the same geological formation. However, they did note an enormous size difference between the two.[8] Further study by Benson, Carrano and Brusatte found that it was not as closely related to Shaochilong as first thought, but that it was a carnosaur (of the family Neovenatoridae), closely related to Allosaurus as Hu had initially thought.[2] Phylogenetic analysis published by Porfiri et al. in 2018 recovered Chilantaisaurus as a primitive coelurosaurian.[9]
Several species have been described based on very poor remains. The species "Chilantaisaurus" sibiricus (previously informally known as either
An additional species named in 1979, "Chilantaisaurus" zheziangensis, based on bones from the foot and a partial tibia,
The cladogram below follows a 2016 analysis by Sebastián Apesteguía, Nathan D. Smith, Rubén Juarez Valieri, and Peter J. Makovicky based on the dataset of Carrano et al. (2012).[16]
Allosauroidea |
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References
- ^ a b Hu, S.-Y. (1964). "Carnosaurian remains from Alashan, Inner Mongolia" (PDF). Vertebrata PalAsiatica (in Chinese and English). 8 (1): 42–63.
- ^ S2CID 22646156.
- ISBN 9780671619466.
- OCLC 985402380.
- .
- PMID 30897281.
- S2CID 53356119.
- ^
- S2CID 134117648.
- ^ Riabinin, 1915. Zamtka o dinozavry ise Zabaykalya [A note on a dinosaur from the trans-Baikal region]. Trudy Geologichyeskago Muszeyah Imeni Petra Velikago Imperatorskoy Academiy Nauk. 8(5), 133-140.
- ISBN 0-520-24209-2.
- ^ "Coelurosauria". theropoddatabase.com.
- ^ Dong, Z. (1979). "Cretaceous dinosaur fossils in southern China". In Institute of Vertebrate Paleontology and Paleoanthropology; Nanjing Institute of Paleontology (eds.). Mesozoic and Cenozoic Redbeds in Southern China (in Chinese). Beijing: Science Press. pp. 342–350. Translated paper
- S2CID 53405097.
- ^ Qian, M.-P.; Zhang, Z.-Y.; Jiang, Y.; Jiang, Y.-G.; Zhang, Y.-J.; Chen, R.; Xing, G.-F. (2012). "浙江白垩纪镰刀龙类恐龙" [Cretaceous therizinosaurs in Zhejiang of eastern China]. Journal of Geology (in Chinese). 36 (4): 337−348.
- PMID 27410683.
External links
- Media related to Chilantaisaurus at Wikimedia Commons