| Title |
The first definitive carcharodontosaurid (Dinosauria: Theropoda) from Asia and the delayed ascent of tyrannosaurids
|
|---|---|
| Published in |
The Science of Nature, June 2009
|
| DOI | 10.1007/s00114-009-0565-2 |
| Pubmed ID | |
| Authors |
Stephen L. Brusatte, Roger B. J. Benson, Daniel J. Chure, Xing Xu, Corwin Sullivan, David W. E. Hone |
| Abstract |
Little is known about the evolution of large-bodied theropod dinosaurs during the Early to mid Cretaceous in Asia. Prior to this time, Asia was home to an endemic fauna of basal tetanurans, whereas terminal Cretaceous ecosystems were dominated by tyrannosaurids, but the intervening 60 million years left a sparse fossil record. Here, we redescribe the enigmatic large-bodied Chilantaisaurus maortuensis from the Turonian of Inner Mongolia, China. We refer this species to a new genus, Shaochilong, and analyze its systematic affinities. Although Shaochilong has previously been allied with several disparate theropod groups (Megalosauridae, Allosauridae, Tyrannosauroidea, Maniraptora), we find strong support for a derived carcharodontosaurid placement. As such, Shaochilong is the first unequivocal Asian member of Carcharodontosauridae, which was once thought to be restricted to Gondwana. The discovery of an Asian carcharodontosaurid indicates that this clade was cosmopolitan in the Early to mid Cretaceous and that Asian large-bodied theropod faunas were no longer endemic at this time. It may also suggest that the ascent of tyrannosaurids into the large-bodied dinosaurian predator niche was a late event that occurred towards the end of the Cretaceous, between the Turonian and the Campanian. |
Mendeley readers
The data shown below were compiled from readership statistics for 90 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Brazil | 3 | 3% |
| Chile | 2 | 2% |
| Portugal | 1 | 1% |
| Netherlands | 1 | 1% |
| United Kingdom | 1 | 1% |
| Canada | 1 | 1% |
| Argentina | 1 | 1% |
| United States | 1 | 1% |
| Poland | 1 | 1% |
| Other | 0 | 0% |
| Unknown | 78 | 87% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 17 | 19% |
| Student > Bachelor | 15 | 17% |
| Researcher | 13 | 14% |
| Student > Master | 9 | 10% |
| Student > Doctoral Student | 7 | 8% |
| Other | 16 | 18% |
| Unknown | 13 | 14% |
| Readers by discipline | Count | As % |
|---|---|---|
| Earth and Planetary Sciences | 39 | 43% |
| Agricultural and Biological Sciences | 29 | 32% |
| Biochemistry, Genetics and Molecular Biology | 4 | 4% |
| Environmental Science | 2 | 2% |
| Psychology | 1 | 1% |
| Other | 1 | 1% |
| Unknown | 14 | 16% |
Attention Score in Context
This research output has an Altmetric Attention Score of 17. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 26 November 2023.
All research outputs
#2,000,345
of 23,794,258 outputs
Outputs from The Science of Nature
#267
of 2,195 outputs
Outputs of similar age
#6,851
of 116,349 outputs
Outputs of similar age from The Science of Nature
#6
of 17 outputs
Altmetric has tracked 23,794,258 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 91st percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,195 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 13.5. This one has done well, scoring higher than 87% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 116,349 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 94% of its contemporaries.
We're also able to compare this research output to 17 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 64% of its contemporaries.