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New record of organ...
New record of organic-walled, morphologically distinct microfossils from the late Paleoproterozoic Changcheng Group in the Yanshan Range, North China
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- Miao, Lanyun (författare)
- Uppsala universitet,Paleobiologi,Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China;Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China;Univ Chinese Acad Sci, Coll Earth Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
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- Moczydlowska, Malgorzata, 1951- (författare)
- Uppsala universitet,Paleobiologi
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- Zhu, Shixing (författare)
- China Geol Survey, Tianjin Inst Geol & Mineral Resources, Tianjin 300170, Peoples R China
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- Zhu, Maoyan (författare)
- Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China;Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China;Univ Chinese Acad Sci, Coll Earth Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
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(creator_code:org_t)
- ELSEVIER SCIENCE BV, 2019
- 2019
- Engelska.
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Ingår i: Precambrian Research. - : ELSEVIER SCIENCE BV. - 0301-9268 .- 1872-7433. ; 321, s. 172-198
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Eukaryotic life has likely existed since the late Paleoproterozoic, yet little is known about its early diversity and phylogenetic relationships. Organic-walled microfossils (OWMs) with conspicuous morphology provide a unique material to investigate the deep evolution of eukaryotic and prokaryotic microbial clades. Here we report a diverse assemblage of OWMs from the lower Changcheng Group (c. 1673-1638 Ma, Changzhougou and Chuanlinggou formations) in the Yanshan Range, North China, which consists of 15 species, including 2 that are newly described. The fossil assemblage is dominated by spheromorphs with less numerous process-bearing vesicles, as are colonial and filamentous forms. Among these, 6 morphologically complex taxa (Dictyosphaera, 2 species of Germinosphaera, Pterospermopsimorpha, Simia, and Valeria) are identified as unambiguous unicellular eukaryotes. Four species (Cucumiforma, Navifusa, Schizofusa and large Leiosphaeridia) with relatively simple morphology but having large size, thick wall, and some showing median-split excystment structures, are of probable eukaryotic affinity. However, various colonial microfossils could be either eukaryotes or prokaryotes. The new record of morphologically disparate OWMs represents one of the earliest occurrences of eukaryotes in both China and the world, and indicates that the eukaryotic life was already well established in the late Paleoproterozoic and was of moderate diversity, similar to that of the Mesoproterozoic.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
Nyckelord
- Organic-walled microfossil
- Eukaryote
- Paleoproterozoic
- Changcheng Group
- North China
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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