| 论文标题： | |
|---|---|
| 作者： | |
| 出版刊物： | |
| 出版日期： | |
| 出版年份： | |
| 卷/期： | |
| DOI： | |
| 论文摘要： | Calcified coccoid fossils in the Permian-Triassic boundary microbialites were widely considered to represent the remains of the organisms that formed the microbialites. However, this role has been recently attributed to the fossil casts of Microcystis cyanobacterial colonies, leaving the ecological role of the coccoid fossils, as well as their affinities, uncertain. Here we propose that these coccoid fossils bear morphological similarity and are related to the extant epiphytic cyanobacterium Stanieria, and that they lived in surface waters by attaching themselves to bloom-forming phytoplankton, in a hitch-hiking lifestyle. Calcification of the envelopes of these interpreted Stanieria cells produced the small thin-walled spherical calcareous coccoid fossils. Different from ordinary pseudoplanktons, Stanieria cells cannot attach themselves to sparse plankton, but only to densely packed phytoplanktons in bloom. The dependence of these calcified Stanieria fossils on this lifestyle makes them possible indicators of ancient planktonic blooms. (C) 2015 Elsevier B.V. All rights reserved. |
以下内容与「世界杯携手星空体育彩票公布官方合作」同属公开资讯，可按栏目接着查阅相关条目。
本站按公开材料组织页面。需要原文时请核对应栏目发布页。
若从搜索引擎进入，可先确认当前栏目名称，再按需打开相关阅读。
