Tyrannosauroid integument reveals conflicting patterns of gigantism and feather evolution
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- Phil R. Bell
- University of New England, Armidale 2351, New South Wales, Australia
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- Nicolás E. Campione
- Palaeobiology Programme, Department of Earth Sciences, Uppsala University, Villavägen 16, SE 75236 Uppsala, Sweden
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- W. Scott Persons
- University of Alberta, Edmonton, Alberta, Canada T6E 4S6
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- Philip J. Currie
- University of Alberta, Edmonton, Alberta, Canada T6E 4S6
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- Peter L. Larson
- Black Hills Institute of Geological Research, Inc., Hill City, SD 57745, USA
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- Darren H. Tanke
- Royal Tyrrell Museum of Palaeontology, Drumheller, Alberta, Canada
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- Robert T. Bakker
- Houston Museum of Natural Science, Houston, TX 77030, USA
書誌事項
- 公開日
- 2017-06
- 権利情報
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- https://royalsociety.org/journals/ethics-policies/data-sharing-mining/
- DOI
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- 10.1098/rsbl.2017.0092
- 公開者
- The Royal Society
この論文をさがす
説明
<jats:p> Recent evidence for feathers in theropods has led to speculations that the largest tyrannosaurids, including <jats:italic>Tyrannosaurus rex</jats:italic> , were extensively feathered. We describe fossil integument from <jats:italic>Tyrannosaurus</jats:italic> and other tyrannosaurids ( <jats:italic>Albertosaurus, Daspletosaurus, Gorgosaurus</jats:italic> and <jats:italic>Tarbosaurus</jats:italic> ), confirming that these large-bodied forms possessed scaly, reptilian-like skin. Body size evolution in tyrannosauroids reveals two independent occurrences of gigantism; specifically, the large sizes in <jats:italic>Yutyrannus</jats:italic> and tyrannosaurids were independently derived. These new findings demonstrate that extensive feather coverings observed in some early tyrannosauroids were lost by the Albian, basal to Tyrannosauridae. This loss is unrelated to palaeoclimate but possibly tied to the evolution of gigantism, although other mechanisms exist. </jats:p>
収録刊行物
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- Biology Letters
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Biology Letters 13 (6), 20170092-, 2017-06
The Royal Society