Palaeontology and biostratigraphy of the Early Cambrian Meishucunian Stage in Yunnan Province, South China

Yi, Qian; Bengtson, Stefan

doi:10.18261/8200374157-1989

Cited by 258Paleontology and Stratigraphy of FossilsPaleontology and Evolutionary BiologyEvolution and Paleontology Studies

Palaeontology and biostratigraphy of the Early Cambrian Meishucunian Stage in Yunnan Province, South China

Yi, Qian, Bengtson, Stefan·1989·Fossils and Strata

DOI 10.18261/8200374157-1989

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Abstract

The skeletal fossils of the Early Cambrian Meishucunian Stage from two key localities (Meishucun, Jinning County, and Xianfeng, Xundian County) in eastern Yunnan Province, China, are described and illustrated in detail to provide a basis for improved palaeobiological and biostratigraphical work. About 1250 new SEM illustrations (including a large number of stereo-pairs) of well-preserved material are presented. The taxonomy is extensively revised. When biological and preservational variability are taken into account, the number of genera and species may be reduced through synonymy to about one third of that reported in the literature. Thirty-eight genera (2 of which are new) and 57 species (5 of which are new) are described. The biology and affinities of many of these taxa are also diseussed, but excursions into suprageneric taxonomy are generally restrained. The Meishucunian biotas of Yunnan consist of three successive assemblages with very few taxa in common. The first, the Anabarites-Protohertzina-Arthrochites Assemblage, is dominated by Anabarites and other sedentary tube-dwelling organisms, but non-sedentary benthic mollusc-like fossils (Canopoconus) and probable predators (Protohertzina) also occur. The key elements of this fauna have a wide geographical distribution and may be compared with the earliest skeietal faunas on the Siberian Platform, the Canadian Cordillera, and other regions. The second, the Siphogonuchites-Paragloborilus Assemblage, is characterized by a great diversity of vagile mollusc-like and multisclerite-bearing animals, but also sedentary tube-dwellers and some possible predators (Cyrtochitesand Yunnanodus) occur. This fauna is largely endemic. The third, the Lapworthella-Tannuolina-Sinosachites Assemblage, is mainly characterized by widely distributed taxa of multisclerite-bearing animals (chancelloriids, Halkieria, Tannuolina, and Lapworthella). It has elements in common with late Atdabanian faunas in other regions of the world.

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Calcium phosphatic protoconulariids first appear in the upper Anabarites trisulcatus-Protohertzina anabarica Assemblage Zone of the lower Meishucunian Stage of China.
“Calcium phosphatic protoconulariids first appear in the upper Anabarites trisulcatus -Protohertzina anabarica Assemblage Zone of the lower Meishucunian Stage of China”
From Chronology of early Cambrian biomineralization (2012) · cites this paper as Qian, 1989
Protoconulariids are represented by Arthrochites emeishanensis, Hexangulaconularia formosa and probably related forms such as Carinachites spp. and Emeiconularia trigemme.
“They are represented by Arthrochites emeishanensis Chen, 1982, Hexangulaconularia formosa He in Xing et al . 1984 and probably related forms, such as Carinachites spp. and Emeiconularia trigemme Qian et al . 1997”
From Chronology of early Cambrian biomineralization (2012) · cites this paper as Qian, 1989

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Chancelloriids of the Cambrian Burgess Shale
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“Ray formula – notation showing the number of marginal vs. central rays in a chancelloriid sclerite (Qian and Bengtson, 1989, modified after Sdzuy, 1969).”
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Organic-walled microfossils from the Chert–phosphorite Member, Tal Formation, Precambrian–Cambrian Boundary, India
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NEW WELL-PRESERVED SCLERITOMES OF CHANCELLORIDAE FROM THE EARLY CAMBRIAN YUANSHAN FORMATION (CHENGJIANG, CHINA) AND THE MIDDLE CAMBRIAN WHEELER SHALE (UTAH, USA) AND PALEOBIOLOGICAL IMPLICATIONS
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The lower cambrian fossil anabaritids: Affinities, occurrences and systematics
Kouchinsky, A., Bengtson, S., Feng, W., Kutygin, R., & Val'kov, A. (2009) · Journal of Systematic Palaeontology · doi:10.1017/s1477201909002715 · Cited by 47 · see citing works
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EARLY CAMBRIAN METAZOAN EGGS, EMBRYOS, AND PHOSPHATIC MICROFOSSILS FROM NORTHWESTERN CANADA
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Authors: Yi, Q., & Bengtson, S.
Affiliations: Nanjing Institute of Geology & Palaeontology, Academia Sinica, Chi-Ming-Ssu, Nanjing, People’s Republic of China;
Uppsala University (SE)
ORCID: Bengtson, Stefan
Venue: Fossils and Strata
Publisher: Universitetsforlaget
Published: 1989-06-30
ISSN: 0300-9491 (ISSN-L)
2637-6032
DOI: 10.18261/8200374157-1989
OpenAlex: W2409548894
Cited by: 258
References: 0
Citations by year: 2024: 11 · 2023: 6 · 2022: 5 · 2021: 7 · 2020: 7 · 2019: 9 · 2018: 8 · 2017: 12 · 2016: 6 · 2015: 7 · 2014: 14 · 2013: 5 · 2012: 5
FWCI: 12.40
Type: book
Language: en
Open access: closed
Locations: Fossils and strata (publishedVersion)
Topics: Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
Keywords: Lower Cambrian, biostratigraphy, paleontology, taxonomy, new genus and species, chancelloriids, Atdabanian, Yunnan

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Palaeontology and biostratigraphy of the Early Cambrian Meishucunian Stage in Yunnan Province, South China

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