KMS Nanjing Institute of Geology and Palaeonotology,CAS
Skeletogenesis and asexual reproduction in the earliest biomineralizing animal Cloudina | |
Hua, H; Chen, Z (陈哲); Yuan, XL (袁训来); Zhang, LY; Xiao, SH | |
2005-04-01 | |
发表期刊 | GEOLOGY |
ISSN | 0091-7613 |
卷号 | 33期号:4页码:277-280 |
摘要 | The tubular fossil Cloudina is emerging as an important Ediacaran index fossil. However, its morphology, skeletogenesis, reproduction, and phylogenetic affinity have not been fully resolved. New material from the Dengying Formation of south China confirms that Cloudina tubes consist of eccentrically and sometimes deeply nested funnels and that the tubes lack transverse cross-walls, inconsistent with the traditional cone-in-cone morphological reconstruction. Tube walls are composed of micrometer-sized, more or less equant crystals. A number of Cloudina tubes branch dichotomously, in which daughter funnels split within parent ones. The Cloudina animal is interpreted to have been able to initiate biomineralization of new funnels within old ones. Its skeleton was probably secreted as calcite crystals suspended in organic matrix; the crystals do not appear to have nucleated and grown on a sheeted substrate. It was clearly capable of asexual reproduction, through budding within parent funnels rather than at the apertural end. The morphology, skeletogenesis, and asexual reproduction of Cloudina are broadly similar to modern serpulid annelids, indicating possible phylogenetic relationships or morphological convergence. |
关键词 | Cloudina Skeletogenesis Asexual Reproduction Ediacaran System Dengying Formation South China |
语种 | 英语 |
关键词[WOS] | Shelly Fossils ; Tube ; Namacalathus ; Polychaeta ; Borings ; Oman |
WOS研究方向 | Geology |
WOS类目 | Geology |
WOS记录号 | WOS:000228127100010 |
出版者 | GEOLOGICAL SOC AMERICA, INC |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/708 |
专题 | 中国科学院南京地质古生物研究所 其他 |
通讯作者 | Hua, H |
作者单位 | 1.NW Univ Xian, Dept Geol, Xian 710069, Peoples R China 2.NW Univ Xian, Lab Continental Dynam, Xian 710069, Peoples R China 3.Nanjing Inst Geol & Paleontol, Nanjing 210008, Peoples R China 4.Xian Inst Geol & Min Resources, Xian 710054, Peoples R China 5.Virginia Polytech Inst & State Univ, Dept Geosci, Blacksburg, VA 24061 USA |
推荐引用方式 GB/T 7714 | Hua, H,Chen, Z ,Yuan, XL ,et al. Skeletogenesis and asexual reproduction in the earliest biomineralizing animal Cloudina[J]. GEOLOGY,2005,33(4):277-280. |
APA | Hua, H,Chen, Z ,Yuan, XL ,Zhang, LY,&Xiao, SH.(2005).Skeletogenesis and asexual reproduction in the earliest biomineralizing animal Cloudina.GEOLOGY,33(4),277-280. |
MLA | Hua, H,et al."Skeletogenesis and asexual reproduction in the earliest biomineralizing animal Cloudina".GEOLOGY 33.4(2005):277-280. |
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