| Histology and postural change during the growth of the ceratopsian dinosaur Psittacosaurus lujiatunensis | |
| Zhao, Qi1,2; Benton, Michael J.1; Sullivan, Corwin2; Sander, P. Martin3; Xu, Xing2; q.zhao@me.com | |
| 2013-06-01 | |
| 发表期刊 | NATURE COMMUNICATIONS
 |
| ISSN | 2041-1723 |
| 卷号 | 4期号:0页码:0—0 |
| 文章类型 | Article |
| 摘要 | A few dinosaurs are inferred to have undergone an ontogenetic shift from quadrupedal-to-bipedal posture, or vice versa, based on skeletal allometry. The basal ceratopsian Psittacosaurus lujiatunensis is considered to have been mainly bipedal as an adult. Here we infer a postural shift in this species based on a novel combination of limb measurements and histological data. The forelimb is strongly negatively allometric relative to the hindlimb, and patterns of vascular canal orientation provide evidence that growth of the hindlimb was particularly rapid during the middle part of ontogeny. Histology also makes it possible to determine the ontogenetic ages of individual specimens, showing that the forelimb-to-hindlimb ratio changed rapidly during the first or second year of life and thereafter decreased gradually. Occurrence of an ontogenetic shift from quadrupedality to bipedality was evidently widespread in dinosaurs, and may even represent the ancestral condition for the entire group. |
| 关键词 | Long-bone Histology Maiasaura-peeblesorum Embryos China Locomotion |
| WOS标题词 | Science & Technology |
| URL | 查看原文 |
| 关键词[WOS] | LONG-BONE HISTOLOGY ; MAIASAURA-PEEBLESORUM ; EMBRYOS ; CHINA ; LOCOMOTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| WOS记录号 | WOS:000323669700004 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/4147 |
| 专题 | 古低等脊椎动物研究室 |
| 通讯作者 | q.zhao@me.com |
| 作者单位 | 1.Univ Bristol, Sch Earth Sci, Bristol BS8 1RJ, Avon, England 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing 100044, Peoples R China 3.Univ Bonn, Steinmann Inst, Div Paleontol, D-53115 Bonn, Germany |
| 推荐引用方式 GB/T 7714 | Zhao, Qi,Benton, Michael J.,Sullivan, Corwin,et al. Histology and postural change during the growth of the ceratopsian dinosaur Psittacosaurus lujiatunensis[J]. NATURE COMMUNICATIONS,2013,4(0):0—0. |
| APA | Zhao, Qi,Benton, Michael J.,Sullivan, Corwin,Sander, P. Martin,Xu, Xing,&q.zhao@me.com.(2013).Histology and postural change during the growth of the ceratopsian dinosaur Psittacosaurus lujiatunensis.NATURE COMMUNICATIONS,4(0),0—0. |
| MLA | Zhao, Qi,et al."Histology and postural change during the growth of the ceratopsian dinosaur Psittacosaurus lujiatunensis".NATURE COMMUNICATIONS 4.0(2013):0—0. |
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