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A redescription of Chaoyangia beishanensis (Aves) and a comprehensive phylogeny of Mesozoic birds

Published on Oct 1, 2013in Journal of Systematic Palaeontology 2.33
· DOI :10.1080/14772019.2012.690455
Jingmai K. O'Connor22
Estimated H-index: 22
,
ZHOUZhonghe47
Estimated H-index: 47
Abstract
We review the enigmatic Chaoyangia beishanensis, one of the earliest birds described from the Jiufotang Formation, north-eastern China, and the first to be identified as an ornithurine (Aves: Ornithothoraces) and thus a member of the clade that includes living birds. A complete discussion of the validity of this taxon, which once included the holotype of Songlingornis, is provided, along with a revised diagnosis. The morphology of Chaoyangia is described, including extensive comparison with better known, recently discovered ornithurines as well as several other groups of Mesozoic birds (Confuciusornithiformes, Sapeornithiformes, Enantiornithes). Although preserved information is limited, the large number of fused sacral vertebrae and presence of a distal dorsal process on the ischium are among the features supporting early hypotheses that the only known specimen of Chaoyangia represents an ornithurine. Unique among ornithurines, Chaoyangia possesses two dorsal processes on the ischium, and thus remains a ...
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  • Citations (51)
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References56
Newest
Published on Apr 20, 2011
Jingmai K. O'Connor22
Estimated H-index: 22
(Los Angeles County Museum of Art),
Luis M. Chiappe45
Estimated H-index: 45
(Los Angeles County Museum of Art),
Alyssa Bell4
Estimated H-index: 4
(SC: University of Southern California)
70 Citations Source Cite
Published on Feb 28, 2011in Journal of Systematic Palaeontology 2.33
Jingmai K. O’Connor5
Estimated H-index: 5
,
ZHOUZhonghe47
Estimated H-index: 47
,
Fucheng Zhang31
Estimated H-index: 31
A careful reappraisal of the only known specimen of the poorly understood fossil enantiornithine bird Boluochia zhengi reveals numerous morphological similarities that suggest this taxon is closely related to the well-known Longipteryx chaoyangensis, and so is assignable to the most diverse recognized clade of Early Cretaceous enantiornithines, the Longipterygidae. This new study of the holotype of B. zhengi reveals new longipterygid synapomorphies and expands our knowledge of the temporal and g...
20 Citations Source Cite
Published on Feb 28, 2011in Journal of Systematic Palaeontology 2.33
ZHOUZhonghe47
Estimated H-index: 47
(CAS: Chinese Academy of Sciences),
Larry D. Martin28
Estimated H-index: 28
(KU: University of Kansas)
In this paper we review the distribution of the predentary bone in Mesozoic ornithurine birds. The predentary bone, well known in ornithischian dinosaurs, has now been reported not only in hesperornithids and ichthyornithids but also in a number of Early Cretaceous basal ornithurines, such as Yanornis, Yixianornis, Hongshanornis and Jianchangornis. In many Early Cretaceous ornithurines the predentary bone is not preserved, but the anterior end of the dentary has a blunt, often inclined margin an...
13 Citations Source Cite
Published on Jul 14, 2010in Journal of Vertebrate Paleontology 2.19
Patrick M. O'Connor22
Estimated H-index: 22
(Heritage College of Osteopathic Medicine),
Catherine A. Forster30
Estimated H-index: 30
(GW: George Washington University)
ABSTRACT Recent field efforts in the Mahajanga Basin of northwestern Madagascar have recovered a diverse Late Cretaceous terrestrial and freshwater vertebrate fauna, including a growing diversity of avialans. Previous work on associated bird skeletons resulted in the description of two named avialans (Rahonavis, Vorona). Other materials, including two synsacra and numerous appendicular elements, represent at least five additional taxa of basal (non-neornithine) birds. Among the materials describ...
14 Citations Source Cite
Published on Jun 30, 2010in Chinese Birds
Dong-Sheng Li1
Estimated H-index: 1
,
Corwin Sullivan22
Estimated H-index: 22
+ 1 AuthorsFucheng Zhang31
Estimated H-index: 31
8 Citations Source Cite
Published on Jun 1, 2010in Journal of Earth Science 1.50
ZHOUZhonghe47
Estimated H-index: 47
(CAS: Chinese Academy of Sciences),
Yuan Wang17
Estimated H-index: 17
(CAS: Chinese Academy of Sciences)
3 Citations Source Cite
Published on Mar 24, 2010in Journal of Vertebrate Paleontology 2.19
Jingmai K. O'Connor22
Estimated H-index: 22
(Natural History Museum of Los Angeles County),
Ke-Qin Gao20
Estimated H-index: 20
(PKU: Peking University),
Luis M. Chiappe45
Estimated H-index: 45
(Natural History Museum of Los Angeles County)
ABSTRACT Basal Ornithuromorpha, until recently, was one of the most poorly documented segments of early avian evolution. The known species diversity of the ornithuromorph clade has increased rapidly with the addition of new discoveries from the Early Cretaceous deposits of northeastern China. Reported in this paper is the discovery of a new bird from the Lower Cretaceous Yixian Formation, Liaoning Province, China. The specimen represents a new species, Longicrusavis houi, but bears similarities ...
42 Citations Source Cite
Published on Feb 1, 2010in Cretaceous Research 1.93
Alyssa Bell4
Estimated H-index: 4
(SC: University of Southern California),
Luis M. Chiappe45
Estimated H-index: 45
(Natural History Museum of Los Angeles County)
+ 4 AuthorsKhishigjav Tsogtbaatar11
Estimated H-index: 11
(Mongolian Academy of Sciences)
Abstract Avian fossils from the Upper Cretaceous of Mongolia provide significant scientific insight into the evolution of early birds, primarily due to the scarcity of continental interiors with a well-documented avifauna in the Cretaceous record. This paper describes in detail the anatomy and histology of a new taxon of early ornithuromorph bird, Hollanda luceria , from the Barun Goyot Formation at Khermeen Tsav in the Gobi Desert of Mongolia. The new taxon is represented exclusively by hindlim...
19 Citations Source Cite
Published on Jan 22, 2010
ZHOUZhonghe47
Estimated H-index: 47
(CAS: Chinese Academy of Sciences),
Fucheng Zhang Zhiheng Li1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences)
A new avian genus and species, Zhongjianornis yangi gen. et sp. nov., is reported from the Lower Cretaceous lacustrine deposits of the Jiufotang Formation in Liaoning, northeast China. The new taxon is characterized by possessing the following combination of features: upper and lower jaws toothless, snout pointed, humerus with large and robust deltopectoral crest, second phalanx of the major manual digit longer than the first phalanx, unguals of the alular and major digits of similar length and ...
49 Citations Source Cite
Published on Jan 1, 2010in Geological bulletin of China
Li Zhi-heng1
Estimated H-index: 1
This paper describes a new fossil named Cathayornis chabuensis discovered in 2008,from Chabu,Otog Qi in Inner Mongolia,which also represents the second Cathayornis found in this area.The specimen preserves a complete sternum and furcula with some other clear skeleton impressions.A comparison of the new material with Eocathayornis walkeri,C.yandica and C.chabuensis shows that except the similarity between C.yandica and C.chabuensis,the later one displays some more advanced characteristics than E....
3 Citations
Cited By51
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
(CAS: 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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Published on Jan 11, 2019in Systematic Biology 8.52
Brunno B. Rosa (UFPR: Federal University of Paraná), Gabriel A. R. Melo18
Estimated H-index: 18
(UFPR: Federal University of Paraná),
Marcos S. Barbeitos (UFPR: Federal University of Paraná)
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Published on Mar 22, 2019in Historical Biology 1.25
Junyou Wang (AMNH: American Museum of Natural History), Xiuzhi Hao + 15 AuthorsQuentin Monfroy (University of Pavol Jozef Šafárik)
ABSTRACTWe present the first description of the bone microstructure of the ornithuromorph bird Yanornis from the Early Cretaceous Jehol ornithofauna. Yanornis is a derived member of independent ornithuromorphan clade, itself the sister group to the clade including Iteravis and ornithurans (including modern birds). We demonstrate that Yanornis grew continuously and probably was fully grown within the first or second year of life. No growth marks indicating cessations in bone deposition are presen...
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Published on Jan 1, 2019in Palaeogeography, Palaeoclimatology, Palaeoecology 2.38
Jingmai K. O'Connor22
Estimated H-index: 22
(CAS: 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 Nov 13, 2018in PeerJ 2.12
Jessie Atterholt4
Estimated H-index: 4
(Western University of Health Sciences),
J. Howard Hutchison16
Estimated H-index: 16
(University of California, Berkeley),
Jingmai K. O’Connor9
Estimated H-index: 9
(CAS: Chinese Academy of Sciences)
2 Citations Source Cite
Published on Apr 1, 2018in Cretaceous Research 1.93
Jingmai K. O'Connor22
Estimated H-index: 22
(CAS: Chinese Academy of Sciences),
Xiaoli Wang17
Estimated H-index: 17
(LYU: Linyi University)
+ 5 AuthorsZHOUZhonghe47
Estimated H-index: 47
(CAS: Chinese Academy of Sciences)
Abstract Seeds preserved in association with the holotype of Jeholornis prima provided the first direct evidence of granivory in any Mesozoic bird. Although this long boney-tailed bird also displays several morphological indicators correlated with herbivory such as reduced dentition and a deep mandible, Jeholornis has not been previously reported to possess a gastric mill. However, this feature is commonly linked to herbivory in theropod dinosaurs and present in at least one sympatric ornithurom...
6 Citations Source Cite
Published on Jan 31, 2018
Xiaoting Zheng15
Estimated H-index: 15
(LYU: Linyi University),
Jingmai K. O'Connor22
Estimated H-index: 22
+ 2 AuthorsZHOUZhonghe47
Estimated H-index: 47
STM35-3 from the Yixian Formation is the only Early Cretaceous ornithuromorph preserving direct evidence of granivory. The crop contains numerous seeds and the preservation of gastroliths presumably within the ventriculus indicates this diet was paired with the presence of a gastric mill as in living granivorous birds. STM35-3 was originally referred to Hongshanornis longicresta, member of a diverse clade of small, basal ornithuromorphs with elongate hindlimbs known as the Hongshanornithidae. Hi...
4 Citations Source Cite
Published on Oct 25, 2017
Nicholas R. Chan1
Estimated H-index: 1
(Macquarie University)
Birds originated and radiated in the presence of another group of flying vertebrates, the pterosaurs. Opinion is divided as to whether birds competitively displaced pterosaurs from small-body size niches or whether the two groups coexisted with little competition. Previous studies of Mesozoic birds and pterosaurs compared measurements of homologous limb bones to test these hypotheses. However, these characters probably reflect differing ancestries rather than ecologies. Here, competition and eco...
1 Citations Source Cite
Published on Sep 1, 2017in Paleontological Journal 0.61
N. V. Zelenkov10
Estimated H-index: 10
(RAS: Russian Academy of Sciences),
A. V. Panteleyev (RAS: Russian Academy of Sciences), A. A. Yarkov
New remains of Hesperornithidae are described from several Late Cretaceous (Campanian) localities of the Lower Volga Region (European Russia). New specimens from Rychkovo and Karaykino localities cannot be referred to as Hesperornis rossicus Nessov et Yarkov, 1993 and likely represent a new undescribed species. Bones from Rychkovo belonged to immature individuals with an incompletely formed tarsometatarsus, which is comparable in size to those of adults known from Karyakino. A tarsometatarsus fr...
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