| Title |
A ‘Terror of Tyrannosaurs’: The First Trackways of Tyrannosaurids and Evidence of Gregariousness and Pathology in Tyrannosauridae
|
|---|---|
| Published in |
PLOS ONE, July 2014
|
| DOI | 10.1371/journal.pone.0103613 |
| Pubmed ID | |
| Authors |
Richard T. McCrea, Lisa G. Buckley, James O. Farlow, Martin G. Lockley, Philip J. Currie, Neffra A. Matthews, S. George Pemberton |
| Abstract |
The skeletal record of tyrannosaurids is well-documented, whereas their footprint record is surprisingly sparse. There are only a few isolated footprints attributed to tyrannosaurids and, hitherto, no reported trackways. We report the world's first trackways attributable to tyrannosaurids, and describe a new ichnotaxon attributable to tyrannosaurids. These trackways are from the Upper Cretaceous (Campanian - Maastrichtian) of northeastern British Columbia, Canada. One trackway consists of three tridactyl footprints, and two adjacent trackways consist of two footprints each. All three trackways show animals bearing southeast within an 8.5 meter-wide corridor. Similarities in depth and preservation of the tyrannosaurid tracks indicate that these three trackways were made by track-makers walking concurrently in the same direction. These trackways add significantly to previous osteology-based hypotheses of locomotion and behavior in Tyrannosauridae by providing ichnologic support for gregariousness in tyrannosaurids, and the first record of the walking gait of tyrannosaurids. |
X Demographics
The data shown below were collected from the profiles of 144 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 19 | 13% |
| United Kingdom | 13 | 9% |
| United States | 13 | 9% |
| Japan | 9 | 6% |
| Australia | 7 | 5% |
| Spain | 5 | 3% |
| Austria | 1 | <1% |
| France | 1 | <1% |
| Brazil | 1 | <1% |
| Other | 5 | 3% |
| Unknown | 70 | 49% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 111 | 77% |
| Scientists | 22 | 15% |
| Science communicators (journalists, bloggers, editors) | 8 | 6% |
| Practitioners (doctors, other healthcare professionals) | 2 | 1% |
| Unknown | 1 | <1% |
Mendeley readers
The data shown below were compiled from readership statistics for 115 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 2% |
| United Kingdom | 1 | <1% |
| Chile | 1 | <1% |
| Argentina | 1 | <1% |
| Canada | 1 | <1% |
| Unknown | 109 | 95% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 43 | 37% |
| Researcher | 15 | 13% |
| Student > Ph. D. Student | 12 | 10% |
| Student > Master | 9 | 8% |
| Student > Doctoral Student | 5 | 4% |
| Other | 11 | 10% |
| Unknown | 20 | 17% |
| Readers by discipline | Count | As % |
|---|---|---|
| Earth and Planetary Sciences | 50 | 43% |
| Agricultural and Biological Sciences | 19 | 17% |
| Chemistry | 19 | 17% |
| Medicine and Dentistry | 3 | 3% |
| Environmental Science | 2 | 2% |
| Other | 2 | 2% |
| Unknown | 20 | 17% |