The Paleozoic problematica Wetheredella and Allonema are two aspects of the same organism

The Paleozoic problematica Wetheredella and Allonema are two aspects of the same organism
复制标题

古生代有问题的 Wetheredella 和 Allonema 是同一生物体的两个方面

DOI:
10.1007/s10347-014-0399-z
复制
发表时间:
2014
期刊:
影响因子:
1.8
通讯作者:
Munnecke
Munnecke
中科院分区:
地球科学4区
文献类型:
--
作者:
Jarochowska;Munnecke

文献摘要

参考文献

被引文献

相似文献

Wetheredellae是一种钙质结壳的微问题,仅从其薄片的二维表达中得知。它赋存于寒武纪通过二叠纪岩石,通常与罗斯柴拉和格瓦内拉共生,可能是钙化的蓝藻。我们证明Wetheredellacae可以通过对古生代concertae sedisskerobion AlLonema的切片产生,到目前为止,这是基于它的表面,3D方面来识别的。因此,我们建议Wetherdellas应被视为AlLonema的一个初级异名。类似于Wetheredlaa的结构也通过另一种结壳微问题Ascodictyon在薄片上获得,但其壁上的超微结构不同,它由平行的方解石晶体组成,与AlLonema中的放射状晶体形成对比。研究中使用的异形体是从瑞典哥特兰的中志留统Mulde Brick-Click段中提取的,代表了光带以下的平台外环境。这一点,加上AlLonema的初级钙化的放射状墙壁结构,反对蓝藻或藻类的亲和力,这被认为是Wetheredella。其分类地位尚无定论,但与一些古生代结壳有孔虫有许多共同特征。结合其表面和薄片中识别的“Wetheredella”方面的产状数据,可以更好地了解它的亲和力和古生态功能,特别是它与蓝藻的关系,以及它在古生代生物礁中作为构造者的作用。
Wetheredellais a calcareous encrusting microproblematicum known only from its two-dimensional expression in thin-sections. It occurs in Cambrian through Permian rocks, often in association withRothpletzellaandGirvanella, probable calcifying cyanobacteria. We show thatWetheredellacan be produced by sectioning of the Paleozoicincertae sedissclerobiontAllonema, which has until now been recognized based on its surface, 3D aspect. Therefore, we propose thatWetheredellashould be regarded as a junior synonym ofAllonema. Structures resemblingWetheredellahave also been obtained in thin-sections through another encrusting microproblematicum,Ascodictyon, which, however, differs in the ultrastructure of its wall, which consists of parallel calcite crystals in contrast to radial crystals inAllonema.Allonemaspecimens used in the study were extracted from the Middle Silurian Mulde Brick-clay Member (Gotland, Sweden), representing an off-platform environment below the photic zone. This, together with the primary calcitic, radial wall structure ofAllonemaargues against a cyanobacterial or algal affinity, which had been considered forWetheredella. The taxonomic position ofAllonemaremains unresolved, but the sclerobiont shares many common characteristics with some Paleozoic encrusting foraminifers. Combining the occurrence data onAllonemain its surface aspect and the “Wetheredella” aspect recognized in thin-sections may shed more light on its affinity and paleoecological functions, particularly its association with cyanobacteria and its role as a framework-builder in Paleozoic reefs.
古生代披甲虫和相关有孔虫目
DOI: --
发表时间: 1950
期刊:
影响因子: --
作者:
M. Elias
通讯作者: M. Elias
DOI: 10.1144/gsjgs.145.1.0117
发表时间: 1988-01
影响因子: 2.7
作者:
K. Ratcliffe
通讯作者: K. Ratcliffe
使用表面活性剂 Rewoquat 从富含粘土的岩性中提取微化石的无酸方法
DOI: 10.26879/382
发表时间: 2013
影响因子: 2
作者:
E. Jarochowska;A. Munnecke
通讯作者: A. Munnecke
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者:
E. D. Mulder
通讯作者: E. D. Mulder
DOI: 10.2517/1342-8144-13.1.023
发表时间: 2009-05
期刊: --
影响因子: --
作者:
Y. Ezaki
通讯作者: Y. Ezaki