A revision of enantiornithine (Aves: Ornithothoraces) skull morphology
文献类型：期刊论文
| 作者 | O'Connor, Jingmai K.1,2; Chiappe, Luis M.2; jingmai@usc.edu |
| 刊名 | JOURNAL OF SYSTEMATIC PALAEONTOLOGY
 |
| 出版日期 | 2011 |
| 卷号 | 9期号:1页码:135-157 |
| 关键词 | Avian Skull Variation Cretaceous |
| ISSN号 | 1477-2019 |
| 文献子类 | Article |
| 英文摘要 | Enantiornithines are the most speciose avian clade in the Mesozoic, with a fossil record that nearly spans the Cretaceous; however, with less than half of known taxa preserving skull material, our understanding of their cranial morphology remains incomplete. Here we present a comprehensive overview of the current knowledge of enantiornithine skull anatomy and discuss the range of morphologies known for each of the main cranial elements. The typical enantiornithine skull retains numerous ancestral features such as the absence of fusion among bones, the presence of a postorbital bone, a primitive quadrate with a single headed otic process, an unforked dentary, and teeth. The postorbital in at least one taxon is unreduced, suggesting the existence of a complete infratemporal fenestra and thus an unmodified diapsid skull as in confuciusornithids. The rostrum is well known and shows considerable variation, typical of theropods; however, in terms of rostral proportions, enantiornithines are extremely limited within the modern avian spectrum. Although Late Cretaceous skull material is extremely fragmentary, when compared to Early Cretaceous material it reveals a trend towards more specialized morphologies in younger taxa. The foramen magnum in all taxa points caudally, indicating that the 'flexed' type skull morphology may not have evolved in this group. Enantiornithine teeth show considerable diversity in numbers, size, morphology and placement, ranging from taxa with large teeth found throughout the jaws to taxa with small, rostrally restricted teeth, to the fully edentulous. Despite limited preservation of skull material, a number of trophic specializations can be deduced from the range of preserved morphologies, further hinting at the morphological and ecological diversity of the Cretaceous Enantiornithes. |
| URL标识 | 查看原文 |
| WOS关键词 | EARLY CRETACEOUS BIRD ; ORNITHURINE BIRD ; NORTHERN HEBEI ; AVIAN FLIGHT ; CHINA ; EVOLUTION ; RADIATION ; ANATOMY ; SPAIN ; DINOSAURS |
| WOS研究方向 | Evolutionary Biology ; Paleontology |
| 语种 | 英语 |
| WOS记录号 | WOS:000287404500014 |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/4472]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | jingmai@usc.edu |
| 作者单位 | 1.Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Los Angeles Cty Museum Nat Hist, Dinosaur Inst, Los Angeles, CA 90007 USA |
| 推荐引用方式 GB/T 7714 | O'Connor, Jingmai K.,Chiappe, Luis M.,jingmai@usc.edu. A revision of enantiornithine (Aves: Ornithothoraces) skull morphology[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2011,9(1):135-157. |
| APA | O'Connor, Jingmai K.,Chiappe, Luis M.,&jingmai@usc.edu.(2011).A revision of enantiornithine (Aves: Ornithothoraces) skull morphology.JOURNAL OF SYSTEMATIC PALAEONTOLOGY,9(1),135-157. |
| MLA | O'Connor, Jingmai K.,et al."A revision of enantiornithine (Aves: Ornithothoraces) skull morphology".JOURNAL OF SYSTEMATIC PALAEONTOLOGY 9.1(2011):135-157. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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