论文摘要
Here, we describe a new primitive macroscopic compression fossil species collected from the early Neoproterozoic Liulaobei Formation in the Huainan region, North China.It has a relatively stable semicircular shape, with a thick anterior margin that has a strong curve and a flat posterior margin that probably is flexible, and is millimetric-to centimetric-sized.In addition, a certain filament structure which was preserved on carbonaceous surface of the fossil was visible under SEM.Based on morphology, these specimens were obviously distinct from those common carbonaceous compression fossils collected in the same layer, such as Chuaria, Tawuia etc.On the other hand, by electronic microscopy and element mapping, our data suggest that preservation of these specimens is remarkably similar to Burgess Shale-type fossils in that the exceptional preservation is closely associated with clay minerals.Furthermore, despite a great challenge, we try to reconstruct the three-dimensional morphology of the fossil as a hemispherical dome by identifying three potential morphotypes, which could appear when being compressed from different directions.But the phylogeny of this fossil still remains blurry because of its simple morphology, poorly preserved structure and lack of enough evidence showing recognizable complete life cycle.The new observation will dramatically aid the morphological, paleoecological interpretation and species diversity of these early Neoproterozoic carbonaceous compression fossils.
论文目录
文章来源
类型: 国际会议
作者: Shujian QIN,Lin DONG
来源: 第一届亚洲古生物学大会—暨中国古生物学会成立90周年纪念 2019-11-17
年度: 2019
分类: 基础科学
专业: 生物学,地质学
单位: Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, School of Earth and Space Sciences, Peking University
分类号: Q911.2
页码: 21
总页数: 1
文件大小: 156k
下载量: 1