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SHAOCHILONG

a meat-eating carcharodontosaurid theropod dinosaur from the Late Cretaceous of Asia.
shaochilong
Pronunciation: Sha-chi-long
Meaning: Shark-toothed dragon
Author/s: Brusatte, Benson, et al. (2009)
Synonyms: Chilantaisaurus maortuensis
First Discovery: Alanshan, Inner Mongolia
Chart Position: 540

Shaochilong maortuensis

Discovered in Maortu, 60 km north of Chilantai, Shaochilong maortuensis was initially described in 1964 by Chinese paleontologist Hu Show-Yung who assigned it to the now-neovenatorid Chilantaisaurus as a second species—Chilantaisaurus maortuensis— despite a stupendous difference in size and lack of compareable parts.

By 2001 Chure and Rauhut were doubting this assignment and suspected its remains belonged to a primitive coelurosaur, with the former going sofar as assigning its own, albeit unofficial name "Alashansaurus". A 2009 review by Brusatte et al. showed that everyone had been wrong up to this point and Shaochilong, though uncharacteristically modest in size and with a short snout, was actually the first Asian carcharodontosaurid to be recognised as such. This was a big year for shaking-up the "shark-toothed lizards".

Shaochilong is the youngest known Laurasian allosauroid (the group that includes the carcharodontosaurids) which suggests they were still bossing this area during the early part of the Late Cretaceous. Their demise was sudden which has led some experts to speculate that an extinction event wiped them out along with the diplodocoids, and the rise of the large-bodied tyrannosaurids and huge titanosaurs as dominant carnivores and herbivores was meteoric and confined to the late part of the Late Cretaceous.

Despite its provenance, Shaochilong appears to have more in common with the carcharodontosaurids of Gondwana (the southern-most of two mesozoic supercontinents, including what is now Antarctica, South America, Africa, Madagascar and Australia) such as Mapusaurus and Carcharodontosaurus than those from Laurasia (the northern-most of two mesozoic supercontinents, including what is now North America, Europe and Asia) such as Neovenator and Acrocanthosaurus.
(Shark-toothed dragon from Maortu)Etymology
Shaochilong takes its name from the Chinese "Shaochi" (shark tooth) in reference to the "shark-toothed" carcharodontosauridae of which it was a member, and the Chinese "long" (dragon). If our patented Lati-Greek-ese translator serves us correctly this is pretty much a Chinese translation of Carcharodontosaurus.
The species epithet, maortuensis, is derived from "Maortu" (its place of discovery) and the Latin "-ensis" (from).
Discovery
The remains of Shaochilong were discovered in the Ulansuhai Formation at Maortu, 60 km north of Chilantai, Alanshan, Inner Mongolia, People's Republic of China, in 1960.
The holotype (IVPP V2885.1-7) includes skull fragments, axis and six tail bones.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Turonian
Age range: 94-89 mya
Stats:
Est. max. length: 6 meters
Est. max. hip height: 2 meters
Est. max. weight: 500 Kg
Diet: Carnivore
shaochilong size.png
References
• D. Glut (2003) Dinosaurs: The Encyclopedia, Supplement 3. /uk.
• S. Brusatte, R. Benson, D. Chure, Xing Xu, C. Sullivan, D. Hone (2009)"The first definitive carcharodontosaurid from Asia and the delayed ascent of tyrannosaurids".
• S.Brusatte, R.Benson, D.Chure, Xing Xu, C.Sullivan, D.Hone (2010) "The osteology of Shaochilong maortuensis, a carcharodontosaurid (Dinosauria: Theropoda) from the Late Cretaceous of Asia".
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To cite this page:
Atkinson, L. "SHAOCHILONG :: from DinoChecker's dinosaur archive".
›. Web access: 27th Apr 2017.
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