A new species of the Cambrian bivalved euarthropod Pectocaris with axially differentiated enditic armatures
文献类型：期刊论文
| 作者 | Jin, Changfei1,2; Mai, Huijuan1,2; Chen, Hong1,2,3; Liu, Yu1,2; Hou, Xianguang1,2; Wen, Ruilin4,5; Zhai, Dayou1,2 |
| 刊名 | PAPERS IN PALAEONTOLOGY
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 7期号:4页码:1781-1792 |
| 关键词 | Cambrian Chengjiang arthropod Pectocaris appendage differentiation |
| ISSN号 | 2056-2799 |
| DOI | 10.1002/spp2.1362 |
| 英文摘要 | Although first described in 1999, the early Cambrian Pectocaris remains a poorly known euarthropod genus. Two species, Pectocaris eurypetala and P. spatiosa, have been described from the Chengjiang biota. Here, we report a third species, Pectocaris inopinata sp. nov., which bears a pair of stalked eyes attached to an anterior sclerite, a pair of short but stout antennae, 29-35 cephalothoracic segments each corresponding to a pair of biramous appendages, 11-12 limbless segments carrying two rows of ventral spines and one row of dorsal spines, and a pair of broad telson flukes decorated with short marginal spines. Most strikingly, the endopods of anterior trunk appendages are each axially differentiated with two rows of setulose endites proximally and claw-like paired spines distally, in contrast to the endopods of posterior trunk appendages that carry two rows of setulose endites but lack claw-like paired spines. Phylogenetic analysis shows that P. inopinata, the other two Pectocaris species, together with their close relative Jugatacaris agilis belong to the same monophyletic clade. Our study reveals considerable differences in appendicular details and therefore presumably niche differentiation among Pectocaris and Jugatacaris species, as well as some other bivalved euarthropods in the Cambrian with similar overall appearances. |
| WOS关键词 | BURGESS SHALE ; CHENGJIANG FAUNA ; ARTHROPOD ; YUNNAN ; AFFINITIES ; APPENDAGES ; HOMOLOGY ; REVEALS ; ORIGIN ; CHINA |
| WOS研究方向 | Paleontology |
| 语种 | 英语 |
| WOS记录号 | WOS:000706720600005 |
| 出版者 | WILEY |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102965]  |
| 专题 | 地质与地球物理研究所_中国科学院新生代地质与环境重点实验室 |
| 通讯作者 | Jin, Changfei |
| 作者单位 | 1.Yunnan Univ, Inst Palaeontol, Yunnan Key Lab Palaeobiol, Waihuan South Rd, Kunming 650500, Peoples R China 2.Yunnan Univ, MEC Int Joint Lab Palaeobiol & Palaeoenvironm, Waihuan South Rd, Kunming 650500, Peoples R China 3.Liupanshui Normal Univ, Sch Biol Sci & Technol, Guizhou 553004, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, 19 Beitucheng West Rd, Beijing 100029, Peoples R China 5.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, Changfei,Mai, Huijuan,Chen, Hong,et al. A new species of the Cambrian bivalved euarthropod Pectocaris with axially differentiated enditic armatures[J]. PAPERS IN PALAEONTOLOGY,2021,7(4):1781-1792. |
| APA | Jin, Changfei.,Mai, Huijuan.,Chen, Hong.,Liu, Yu.,Hou, Xianguang.,...&Zhai, Dayou.(2021).A new species of the Cambrian bivalved euarthropod Pectocaris with axially differentiated enditic armatures.PAPERS IN PALAEONTOLOGY,7(4),1781-1792. |
| MLA | Jin, Changfei,et al."A new species of the Cambrian bivalved euarthropod Pectocaris with axially differentiated enditic armatures".PAPERS IN PALAEONTOLOGY 7.4(2021):1781-1792. |
入库方式： OAI收割
来源：地质与地球物理研究所
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