Experimental precipitation of apatite pseudofossils resembling fossil embryos

C. H. Crosby; J. V. Bailey

doi:10.1111/gbi.12264

The Nano Membrane-Like Structure of the Precambrian Microfossils under Atomic Force Microscope (AFM)

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.121-123.739 ◽

2007 ◽

Vol 121-123 ◽

pp. 739-742 ◽

Cited By ~ 1

Author(s):

H.M. Chi ◽

Z.D. Xiao ◽

Xin Xing Xiao

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Atomic Force Microscope ◽

Early Life ◽

Three Dimensional ◽

New Method ◽

Subcellular Structure ◽

Atomic Force ◽

Fossil Embryos ◽

Scanning Electron

Weng`an fauna in Guizhou, China provides a unique window for the evolution of the early life especially since the animal embryos and sponge is found there. Phosphatization makes the fossils preserve in details including cells and subcellular structure. Here we use atomic force microscope observing the surface of some three dimensional preserved embryo fossils and the ultra membrane-like structure is found under atomic force microscope (AFM) while such structure can`t be found under scanning electron microscope (SEM). The membrane-like structure is approximately 10nm in thickness which maybe one part of the fossil embryos or belong to another nano scale microfossils. Therefore, AFM provides a new method for the study of the ultra structure of the microfossils from Weng`an fauna.

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New material of three-dimensionally phosphatized and microscopic cycloneuralians from the Cambrian Paibian Stage of South China

Journal of Paleontology ◽

10.1017/jpa.2017.40 ◽

2017 ◽

Vol 92 (1) ◽

pp. 87-98 ◽

Cited By ~ 3

Author(s):

Yunhuan Liu ◽

Qi Wang ◽

Tiequan Shao ◽

Huaqiao Zhang ◽

Jiachen Qin ◽

...

Keyword(s):

New Species ◽

South China ◽

Early Cambrian ◽

Late Cambrian ◽

New Material ◽

Western Hunan ◽

Fossil Embryos

AbstractSome rare microscopic cycloneuralians are present in the Cambrian of South China, represented by Eopriapulites and Eokinorhynchus (both early Cambrian), fossil embryos of Markuelia (middle to late Cambrian), and palaeoscolecids (early to late Cambrian). Among them, palaeoscolecids are relatively diverse and abundant. Here, we describe new material of three-dimensionally phosphatized and microscopic cycloneuralians from the Paibian Stage of Wangcun Lagerstätte, western Hunan, South China. New material includes fossil embryos assignable to Markuelia sp., two other types of fossil embryos, and three species of palaeoscolecids, including Dispinoscolex decorus Duan, Dong, and Donoghue, 2012, Schistoscolex hunanensis Duan, Dong, and Donoghue, 2012, and Austroscolex sinensis new species. The palaeoscolecid fragments differ mainly in size and armor of the trunk annuli. Since Eokinorhynchus and Eopriapulites occurred the earliest among the Cambrian cycloneuralians, it is proposed here that: (1) cycloneuralians originated in the Cambrian Fortunian small shelly faunas rather than in the early Cambrian macrobenthos, (2) ancestral cycloneuralians may have simple trunk armor, and (3) Eopriapulites represents an ancestral cycloneuralian.

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