The phylogeny of cyclopygid trilobites
文献类型：期刊论文
| 作者 | Braddy, Simon J.; Dale, Laurence A.; Wang, Han1,2 |
| 刊名 | HISTORICAL BIOLOGY
 |
| 出版日期 | 2025-05-11 |
| 页码 | 9 |
| 关键词 | Cyclopygidae evolution Nileidae pelagic Taihungshaniidae Dr Mark Thomas Young, University of Edinburgh, UK. |
| ISSN号 | 0891-2963 |
| DOI | 10.1080/08912963.2025.2501330 |
| 英文摘要 | A new phylogeny of cyclopygid trilobites (Superfamily Cyclopygacea Raymond, 1925) is presented, based on an analysis of 47 genera and 63 characters. The majority-rule consensus supports a paraphyletic Taihungshaniidae Sun, 1931, basal to two clades united by the loss of pygidial spines: Nileidae Angelin, 1854, united by a hypostomal notch in the cephalic doublure, a sub-ocular socle and a pointed posterior margin of the hypostome, excluding Borthaspidella Rasetti 1954, Lakaspis Kobayashi, 1937, and Petrbokia P & rcaron;ibyl and Va & ncaron;ek, 1965; and Cyclopygidae Raymond 1925, united by hypertrophied eyes and the loss of a pestle-shaped glabella, including Illaenopsis Salter, 1866a, a supposed nileid. Nileidae contains two clades, Parabarrandiinae Hup & eacute;, 1955 and Nileinae Angelin, 1854. Character transformations within cyclopygids indicate increased adaptations to a pelagic life habit and deeper depth of life habit, including increased eye size and their migration to the lateral margin of the cephalon, improving the field of vision, reduction in the number of thoracic segments, decrease in body size, overall improved streamlining, an increased length/width ratio and changes in the glabellar shape. |
| WOS关键词 | OPTICAL DESIGN ; ORDOVICIAN ; SYSTEMATICS |
| WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Paleontology |
| 语种 | 英语 |
| WOS记录号 | WOS:001484801900001 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/45163]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Braddy, Simon J.,Dale, Laurence A.,Wang, Han. The phylogeny of cyclopygid trilobites[J]. HISTORICAL BIOLOGY,2025:9. |
| APA | Braddy, Simon J.,Dale, Laurence A.,&Wang, Han.(2025).The phylogeny of cyclopygid trilobites.HISTORICAL BIOLOGY,9. |
| MLA | Braddy, Simon J.,et al."The phylogeny of cyclopygid trilobites".HISTORICAL BIOLOGY (2025):9. |
入库方式： OAI收割
来源：南京地质古生物研究所
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