Feathered dinosaurs from China and the evolution of major avian characters.

@article{Xu2006FeatheredDF,
  title={Feathered dinosaurs from China and the evolution of major avian characters.},
  author={Xing(徐星) Xu},
  journal={Integrative zoology},
  year={2006},
  volume={1 1},
  pages={
          4-11
        }
}
  • Xing(徐星) Xu
  • Published 1 March 2006
  • Biology, Environmental Science, Geography
  • Integrative zoology
Recent discoveries of feathered dinosaurs from Early Cretaceous deposits in Liaoning, China, have not only lent strongest support for the dinosaurian hypothesis of bird origins, but have also provided much-needed information about the origins of feathers and avian flight. Preliminary analysis of character evolution suggests that the major avian osteological characters were acquired during the early evolution of maniraptoran dinosaurs. The available evidence also suggests that the first feathers… 

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References

SHOWING 1-10 OF 46 REFERENCES
New evidence concerning avian origins from the Late Cretaceous of Patagonia
TLDR
A theropod dinosaur from Patagonia is described, Unenlagia comahuensis gen. et sp.
The Evolutionary Origin And Diversification Of Feathers
TLDR
The developmental theory proposes that feathers evolved through a series of evolutionary novelties in developmental mechanisms of the follicle and feather germ, and the discovery of primitive feather fossils on nonavian theropod dinosaurs documents that feathers evolve and diversified in nonavIAN theropods before the origin of birds and before theorigin of flight.
A long-tailed, seed-eating bird from the Early Cretaceous of China
The lacustrine deposits of the Yixian and Jiufotang Formations in the Early Cretaceous Jehol Group in the western Liaoning area of northeast China are well known for preserving feathered dinosaurs,
The smallest known non-avian theropod dinosaur
TLDR
This is the first mature non-avian dinosaur to be found that is smaller than Archaeopteryx, and it eliminates the size disparity between the earliest birds and their closest non-Avian theropod relatives.
Archaeopteryx and the origin of birds
TLDR
Analysis of the five presently known skeletal specimens of Archaeopteryx confirm the conclusions (long rejected by most subsequent workers) of Heilmann (1926), Lowe (1935, 1944, 1944) and Holmgren (1955), namely, that the skeletal anatomy of Archaeipteryx is extraordinarily similar to that of contemporaneous and succeeding coelurosaurian dinosaurs.
Archaeopteryx and the Origin of Flight
TLDR
The primordial insulative function of contour feathers and the predatory hypothesis for the enlargement of the remiges seem to account for the otherwise paradoxical presence in Archaeopteryx on essentially modern "flight" feathers.
Development and evolutionary origin of feathers.
  • R. Prum
  • Biology
    The Journal of experimental zoology
  • 1999
TLDR
A functionally neutral model of the origin and evolutionary diversification of bird feathers based on the hierarchical details of feather development is proposed, predicting that feathers originated with the evolution of the first feather follicle-a cylindrical epidermal invagination around the base of a dermal papilla.
A nesting dinosaur
TLDR
The specimen described here is the first preserved well enough to determine its precise relationship with the nest, and provides the strongest evidence yet for the presence of avian brooding behaviour in non-avian dinosaurs.
A therizinosauroid dinosaur with integumentary structures from China
TLDR
This new taxon from the Yixian Formation provides fresh evidence that therizinosauroids are nested within the coelurosaurian theropods, and supports the hypothesis that the filamentous integumentary structures may be homologous to the feathers of birds.
Two feathered dinosaurs from northeastern China
TLDR
Two theropods from the Upper Jurassic/Lower Cretaceous Chaomidianzi Formation of Liaoning province, China are described, which represent stages in the evolution of birds from feathered, ground-living, bipedal dinosaurs.
...
1
2
3
4
5
...