蒙古西部下寒武统 Gaparella 属的一种新的非球形态问题动物

IF 0.7 4区 地球科学 Q4 PALEONTOLOGY
E. A. Luzhnaya
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引用次数: 0

摘要

摘要 描述了来自蒙古西部Hevte-Tsakhir-Nuru海脊下统(下寒武统)的一种新的问题球形微化石Gaparella elenae sp.nov.,并提出了一个新的组合Gaparella kuanchuanpuensis (Qian, 1977)。尽管其形态非常奇特,Missarzhevsky 和 Mambetov, 1981 中的 Gaparella Missarzhevsky 属通常被认为是 Archaeooides Qian, 1977 属的低等异名。本文展示了蒙古 Gaparella 类标本的岩石学变异性,并重建了它们的形态:这些标本是空心球体,壁薄多孔,双层壁;孔隙之间有空腔系统,空腔散布在小高地,空腔之间有管道系统;壁可能是有机的,并混有矿物成分。这些化石可能是浮游滤食动物。它们的组织程度似乎与多孔动物一致;很可能是幼体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A New Spheromorphic Problematic of the Genus Gaparella from the Lower Cambrian of Western Mongolia

A New Spheromorphic Problematic of the Genus Gaparella from the Lower Cambrian of Western Mongolia

Abstract

A new problematic spheromorphic microfossil Gaparella elenae sp. nov. is described from the lower Tommotian (Lower Cambrian) in the Hevte-Tsakhir-Nuruu Ridge, Western Mongolia, and a new combination Gaparella kuanchuanpuensis (Qian, 1977) is proposed. Despite its very peculiar morphology, the genus Gaparella Missarzhevsky in Missarzhevsky and Mambetov, 1981 is usually considered as a junior synonym of the genus Archaeooides Qian, 1977. The taphonomic variability of Mongolian specimens of Gaparella is demonstrated, and their morphology is reconstructed: these were hollow spheres, with a thin perforated double-layered wall; with a system of cavities between the pores, which were scattered on small elevations, with a system of canals in between; the wall may have been organic with an admixture of mineral components. These fossils were probably planktonic filter feeders. Their level of organization appears to be consistent with Porifera; most likely these were juvenile forms.

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来源期刊
Paleontological Journal
Paleontological Journal 地学-古生物学
CiteScore
1.20
自引率
33.30%
发文量
70
审稿时长
6-12 weeks
期刊介绍: Paleontological Journal (Paleontologicheskii zhurnal) is the principal Russian periodical in paleontology. The journal publishes original work on the anatomy, morphology, and taxonomy of fossil organisms, as well as their distribution, ecology, and origin. It also publishes studies on the evolution of organisms, ecosystems, and the biosphere and provides invaluable information on global biostratigraphy with an emphasis on Eastern Europe and Asia.
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