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Tyrannosauroid inte...
Tyrannosauroid integument reveals conflicting patterns of gigantism and feather evolution
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- Belli, Phil R. (författare)
- Univ New England, Armidale, NSW 2351, Australia.
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- Campione, Nicolas E. (författare)
- Uppsala universitet,Paleobiologi
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- Persons, W. Scott (författare)
- Univ Alberta, Edmonton, AB T6E 4S6, Canada.
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- Currie, Philip J. (författare)
- Univ Alberta, Edmonton, AB T6E 4S6, Canada.
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- Larson, Peter L. (författare)
- Geol Res Inc, Black Hills Inst, Hill City, SD 57745 USA.
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- Tanke, Darren H. (författare)
- Royal Tyrrell Museum Palaeontol, Drumheller, AB, Canada.
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- Bakker, Robert T. (författare)
- Houston Museum Nat Sci, Houston, TX 77030 USA.
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Univ New England, Armidale, NSW 2351, Australia Paleobiologi (creator_code:org_t)
- 2017-06-07
- 2017
- Engelska.
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Ingår i: Biology Letters. - : ROYAL SOC. - 1744-9561 .- 1744-957X. ; 13:6
- Relaterad länk:
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https://royalsociety...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Recent evidence for feathers in theropods has led to speculations that the largest tyrannosaurids, including Tyrannosaurus rex, were extensively feathered. We describe fossil integument from Tyrannosaurus and other tyrannosaurids (Albertosaurus, Daspletosaurus, Gorgosaurus and Tarbosaurus), 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 Yutyrannus 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.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- Tyrannosauridae
- skin
- feathers
- gigantism
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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