KMS Institute of Vertebrate Paleontology and Paleoanthropology
| The lower jaw of Devonian ray-finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology | |
Igielman, Ben1; Figueroa, Rodrigo Tinoco2,3,4,5; Higgins, Robert R.4,5; Pierce, Stephanie E.4,5; Coates, Michael I.6; Troyer, Emily M.2,3; Fernandez, Vincent7; Dollman, Kathleen7; Lu, Jing8,9; Zhu, Min8,9 ; Friedman, Matt2,3,10; Giles, Sam1,10
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| 2025-07-21 | |
| 发表期刊 | ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
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| ISSN | 1932-8486 |
| 期号 | 1页码:53 |
| 摘要 | Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X-ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian and represent roughly two-thirds of all taxa known from more than isolated or fragmentary material. Our findings corroborate previous reports in part but reveal considerable new anatomical data and represent the first detailed description for roughly half of these taxa. The mandibles display substantial variation in size, spanning more than an order of magnitude. Although most conform to a generalized pattern of a large dentary and one or two smaller infradentaries, XCT data reveal significant differences in the structure of the jaw and arrangement of teeth that may be of functional relevance. We report the presence of a rudimentary coronoid process in several taxa, contributed to by the dentary and/or infradentaries, as well a raised articular region, resulting in a mandible with an offset bite and that functions as a bent level arm. Among the most striking variation is that of tooth morphology: several taxa have heterodont dentary teeth that vary in size and orientation, and multiple variations on enlarged, whorl-like and posteriorly-oriented anterior coronoid dentition are observed. We use these new data to revise morphological characters that may be of phylogenetic significance and consider the possible functional implicationds of these traits. The observed variation in mandible form and structure suggests previously unappreciated functional diversity among otherwise morphologically homogenous Devonian ray-finned fishes. |
| 关键词 | actinopterygian CT scanning fossil functional morphology lower jaw |
| DOI | 10.1002/ar.70005 |
| 关键词[WOS] | WESTERN-AUSTRALIA ; GOGO FORMATION ; FEEDING MECHANISM ; EVOLUTION ; INTERRELATIONSHIPS ; OSTEICHTHYES ; LEPISOSTEUS ; ORIGIN ; GENUS ; SKULL |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | Natural Environment Research Council###3271 ; National Science Foundation###979 ; Royal Society###687 |
| WOS研究方向 | Anatomy & Morphology |
| WOS类目 | Anatomy & Morphology |
| WOS记录号 | WOS:001533127200001 |
| 出版者 | WILEY |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/24500 |
| 专题 | 中国科学院古脊椎动物与古人类研究所 |
| 通讯作者 | Giles, Sam |
| 作者单位 | 1.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham, England 2.Univ Michigan, Museum Paleontol, Ann Arbor, MI 48104 USA 3.Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI USA 4.Harvard Univ, Museum Comparat Zool, Cambridge, MA USA 5.Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA USA 6.Univ Chicago, Organismal Biol & Anat, Chicago, IL USA 7.European Synchrotron Radiat Facil, Grenoble, France 8.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 9.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 10.Nat Hist Museum, London, England |
| 推荐引用方式 GB/T 7714 | Igielman, Ben,Figueroa, Rodrigo Tinoco,Higgins, Robert R.,et al. The lower jaw of Devonian ray-finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology[J]. ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY,2025(1):53. |
| APA | Igielman, Ben.,Figueroa, Rodrigo Tinoco.,Higgins, Robert R..,Pierce, Stephanie E..,Coates, Michael I..,...&Giles, Sam.(2025).The lower jaw of Devonian ray-finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology.ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY(1),53. |
| MLA | Igielman, Ben,et al."The lower jaw of Devonian ray-finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology".ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY .1(2025):53. |
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| 2025.01.30.635695v1.（11608KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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