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An exceptionally well-preserved theropod dinosaur from the Yixian Formation of China

Published on Jan 1, 1998in Nature 41.58
· DOI :10.1038/34356
Pei-ji Chen1
Estimated H-index: 1
(Academia Sinica),
Zhiming Dong13
Estimated H-index: 13
(Academia Sinica),
Shuo-nan Zhen1
Estimated H-index: 1
(American Museum of Natural History)
Abstract
Two spectacular fossilized dinosaur skeletons were recently discovered in Liaoning in northeastern China. Here we describe the two nearly complete skeletons of a small theropod that represent a species closely related to Compsognathus. Sinosauropteryx has the longest tail of any known theropod, and a three-fingered hand dominated by the first finger, which is longer and thicker than either of the bones of the forearm. Both specimens have interesting integumentary structures that could provide information about the origin of feathers. The larger individual also has stomach contents, and a pair of eggs in the abdomen.
  • References (23)
  • Citations (473)
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References23
Newest
Published on Oct 22, 2015in The Quarterly Review of Biology 2.32
Philip Regal2
Estimated H-index: 2
Previous theories relating the origin of feathers to flight or to heat conservation are considered to be inadequate. There is need for a model of feather evolution that gives attention to the function and adaptive advantage of intermediate structures. The present model attempts to reveal and to deal with, the spectrum of complex questions that must be considered. In several genera of modern lizards, scales are elongated in warm climates. It is argued that these scales act as small shields to sol...
78 Citations Source Cite
Published on Feb 1, 1997in Nature 41.58
Jin Meng27
Estimated H-index: 27
(University of Massachusetts Amherst),
André R. Wyss30
Estimated H-index: 30
(University of California, Santa Barbara)
Evidence of hair from several extinct mammals has been recovered from a rich accumulation of fossil excrement from the Late Palaeocene beds of Inner Mongolia, China. This highly unusual and previously undocumented depositional occurrence consists of hundreds of mammalian carnivore coprolites (fossil faeces) and a lesser number of probably raptorial bird regurgitalites1 (fossil pellets). The fossil hair occurs as impressions and natural casts in the extremely fine-grained, calcareous matrix that ...
50 Citations Source Cite
Published on Jan 1, 1997in Nature 41.58
David J. Varricchio28
Estimated H-index: 28
,
Frankie D. Jackson19
Estimated H-index: 19
(Montana State University)
+ 1 AuthorsJohn R. Horner41
Estimated H-index: 41
(Montana State University)
Living archosaurs (crocodilians and birds) share several reproductive features, including hard-shelled eggs1, parental care2,3, assembly-line oviducts4 and luteal morphology5. Nevertheless, crocodilians produce many small eggs that they ovulate, shell and deposit en masse, and incubate within sediments or vegetation mounds2,4,6, whereas birds produce fewer but larger eggs7, usually from a single ovary and oviduct3. Further, birds ovulate, shell and lay one egg at a time and incubate eggs directl...
148 Citations Source Cite
Published on Nov 15, 1996in Science 41.06
Lianhai Hou8
Estimated H-index: 8
(Chinese Academy of Sciences),
Larry D. Martin28
Estimated H-index: 28
(University of Kansas)
+ 1 AuthorsAlan Feduccia22
Estimated H-index: 22
(University of North Carolina at Chapel Hill)
Late Jurassic and Early Cretaceous birds from northeastern China, including many complete skeletons of Confuciusornis , provide evidence for a fundamental dichotomy in the class Aves that may antedate the temporal occurrence of the Late Jurassic Archaeopteryx . The abundance of Confuciusornis may provide evidence of avian social behavior. Jurassic skeletal remains of an ornithurine bird lend further support to the idea of an early separation of the line that gave rise to modern birds. Chaoyangia...
117 Citations Source Cite
Published on Apr 1, 1996in Canadian Journal of Earth Sciences 1.32
Zhiming Dong13
Estimated H-index: 13
,
Philip J. Currie50
Estimated H-index: 50
A partial skeleton of Oviraptor (which means egg thief), collected at Bayan Mandahu (Inner Mongolia, People's Republic of China) in 1990 was lying on top of a nest of eggs. Of the six known skeletons of this genus from Upper Cretaceous Djadokhtan sediments, this is the second occurrence in which the theropods were interacting with the eggs when they were buried by sand and dust during sandstorms. Two explanations for the association of Oviraptor with eggs are that the theropod may have been eati...
96 Citations Source Cite
Published on Jan 1, 1996
Chen Peiji (陈丕基)1
Estimated H-index: 1
7 Citations
Published on Jan 1, 1996
Alan Feduccia22
Estimated H-index: 22
This text is a comprehensive and illustrated discussion of the origin of birds and of avian flight. Ornithologist and evolutionary biologist Alan Feduccia, author of "Age of Birds," here draws on fossil evidence and studies of the structure and biochemistry of living birds to present knowledge and data on avian evolution and propose a model of this evolutionary process. Feduccia begins with an overview of bird evolution, giving his opinions about the controversial problem in verte-brate paleonto...
464 Citations
Published on Jan 1, 1996
David E. Fastovsky19
Estimated H-index: 19
,
David B. Weishampel28
Estimated H-index: 28
Preface to the second edition Part I. Setting the Stage: 1. Introduction 2. Back to the past: the Mesozoic era 3. Discovering order in the natural world 4. Interrelationships of vertebrates 5. The origin of Dinosauria Part II. Ornithischia: Armored, Horned, and Duck-Billed Dinosaurs: 6. Stegosauria: hot plates 7. Ankylosauria: mas and gas 8. Pachycephalosauria: ramroads of the Cretaceous 9. Ceratopsia: horns and all the frills 10. Ornithopoda: the tuskers, antelopes, and 'mighty ducks' of the Me...
69 Citations
Published on Nov 1, 1995in Nature 41.58
Luis M. Chiappe45
Estimated H-index: 45
(American Museum of Natural History)
More than half of the evolutionary history of birds is played out in the Mesozoic. A recent burst of fossil discoveries has documented a tremendous diversity of early avians. Clarification of the Phylogenetic structure of this diversity has provided clues for a better understanding of the evolution of functional, developmental and physiological characteristics of modern birds. Yet their long Mesozoic history is only beginning to be deciphered.
203 Citations Source Cite
Published on Oct 1, 1995in Nature 41.58
Lianhai Hou8
Estimated H-index: 8
(Chinese Academy of Sciences),
ZHOUZhonghe47
Estimated H-index: 47
(Chinese Academy of Sciences)
+ 1 AuthorsAlan Feduccia22
Estimated H-index: 22
(University of North Carolina at Chapel Hill)
DISCOVERY Of avian remains close to the age of Archaeopteryx in the Liaoning Province of northeastern China provides the earliest evidence for a beaked, edentulous bird. The associated wing skeleton retains the primitive pattern found in Archaeopteryx, including a manus with unfused carpal elements and long digits. Two leg skeletons from the same site also show an Archaeopteryx level of morphology, and provide the earliest indisputable evidence for a covering of body contour feathers, These spec...
122 Citations Source Cite
Cited By473
Newest
Published on Mar 20, 2019in Nature Communications 12.35
Alida M. Bailleul (Center for Excellence in Education), Jingmai O’Connor (Center for Excellence in Education)+ 5 AuthorsZHOUZhonghe47
Estimated H-index: 47
(Chinese Academy of Sciences)
Understanding non-crown dinosaur reproduction is hindered by a paucity of directly associated adults with reproductive traces. Here we describe a new enantiornithine, Avimaia schweitzerae gen. et sp. nov., from the Lower Cretaceous Xiagou Formation with an unlaid egg two-dimensionally preserved within the abdominothoracic cavity. Ground-sections reveal abnormal eggshell proportions, and multiple eggshell layers best interpreted as a multi-layered egg resulting from prolonged oviductal retention....
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Daria Kiseleva , Oleg Shilovsky (Kazan Federal University)+ 4 AuthorsNadezhda Cherednichenko
Abstract The Kotelnich vertebrate fossil site, one of the richest of the Permian period, is characterised by the excellent preservation of fossil remains due to their burial in a silty anaerobic environment similar to modern peat bogs. The aim of the work is to carry out a comprehensive study of the composition and structure of bone fragments of the Permian parareptile Deltavjatia vjatkensis , as well as that of its embedding rocks, to support further paleoecological and fossilisation reconstruc...
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Published on Jan 4, 2019in Lethaia 2.22
Zuohuan Qin1
Estimated H-index: 1
(China University of Geosciences),
Dangpeng Xi2
Estimated H-index: 2
(China University of Geosciences)
+ 5 AuthorsWANXiaoqiao14
Estimated H-index: 14
(China University of Geosciences)
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Published on Jun 1, 2019in Trends in Ecology and Evolution 15.94
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Published on May 1, 2019in Micron 1.73
Andrea P. C. Campos7
Estimated H-index: 7
(Aix-Marseille University),
Rodrigo Tomazetto de Carvalho2
Estimated H-index: 2
+ 3 AuthorsMarcos Farina29
Estimated H-index: 29
(Federal University of Rio de Janeiro)
Abstract The study of fossil feathers has been revitalized in the last few decades and has contributed significantly to paleontological studies of dinosaurs and birds. Specific morphological and physicochemical characteristics of the microscale structures of feathers and the protein keratin are key targets when preserved during the fossilization process. Keratin is a fibrous protein that composes some hard tissues such as hair, nails and feathers. It is part of the so called intermediate filamen...
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Published on Mar 15, 2019
Chungkun Shih19
Estimated H-index: 19
(Capital Normal University),
Taiping Gao10
Estimated H-index: 10
(Capital Normal University),
Dong Ren25
Estimated H-index: 25
(Capital Normal University)
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Published on Mar 6, 2019in Minerals 1.83
Kliti Grice38
Estimated H-index: 38
,
Alex I. Holman5
Estimated H-index: 5
+ 1 AuthorsMadison Tripp
In the vast majority of fossils, the organic matter is degraded with only an impression or cast of the organism remaining. In rare cases, ideal burial conditions result in a rapid fossilisation with an exceptional preservation of soft tissues and occasionally organic matter. Such deposits are known as Lagerstatten and have been found throughout the geological record. Exceptional preservation is often associated with finely crystalline quartz (e.g., cherts), fine sediments (e.g., muds) or volcani...
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Yanhong Pan13
Estimated H-index: 13
(Chinese Academy of Sciences),
Wenxia Zheng10
Estimated H-index: 10
(North Carolina State University)
+ 13 AuthorsTao Zhao1
Estimated H-index: 1
(Chinese Academy of Sciences)
Dinosaur fossils possessing integumentary appendages of various morphologies, interpreted as feathers, have greatly enhanced our understanding of the evolutionary link between birds and dinosaurs, as well as the origins of feathers and avian flight. In extant birds, the unique expression and amino acid composition of proteins in mature feathers have been shown to determine their biomechanical properties, such as hardness, resilience, and plasticity. Here, we provide molecular and ultrastructural...
2 Citations Source Cite
Jingmai K. O'Connor22
Estimated H-index: 22
(Chinese Academy of Sciences)
Abstract Although direct associations that reveal diet are extremely rare in the fossil record, the rich Lower Cretaceous Jehol Lagerstatte has produced dozens of specimens preserving ingested items, which together reveal important information regarding the early evolution of the avian alimentary canal. Direct evidence indicates Jeholornis and Sapeornis ate seeds and like living granivores utilized a gastric mill although only the more derived Sapeornis possessed a crop for food storage. Despite...
2 Citations Source Cite
Published on Jan 1, 2019in Science China-earth Sciences 2.06
Dangpeng Xi5
Estimated H-index: 5
(China University of Geosciences),
WANXiaoqiao14
Estimated H-index: 14
(China University of Geosciences)
+ 1 AuthorsLIGang16
Estimated H-index: 16
(Chinese Academy of Sciences)
Cretaceous strata are widely distributed across China and record a variety of depositional settings. The sedimentary facies consist primarily of terrestrial, marine and interbedded marine-terrestrial deposits, of which marine and interbedded facies are relatively limited. Based a thorough review of the subdivisions and correlations of Cretaceous strata in China, we provide an up-to-date integrated chronostratigraphy and geochronologic framework of the Cretaceous system and its deposits in China....
1 Citations Source Cite