New materials of multicellular algae from the earliest Cambrian Kuanchuanpu biota in South China
The Kuanchuanpu biota (ca. 535 Ma) from the basal Cambrian in South China yields various phosphatized, three-dimensionally preserved microscopic fossils, such as animal embryos, cyanobacteria, and algae. This provides an exceptional window for investigating the rapid divergent evolution of animal...
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| Format: | Article |
| Language: | English |
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Institute of Paleobiology PAS
2022-06-01
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| Series: | Acta Palaeontologica Polonica |
| Subjects: |
| _version_ | 1818237169539481600 |
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| author | QING-QIN TANG YA-JUAN ZHENG SONG QIN YIN-CHU WANG XIAO-GUANG YANG, XING WANG JIE SUN KENTARO UESUGI TSUYOSHI KOMIYA JIAN HAN |
| author_facet | QING-QIN TANG YA-JUAN ZHENG SONG QIN YIN-CHU WANG XIAO-GUANG YANG, XING WANG JIE SUN KENTARO UESUGI TSUYOSHI KOMIYA JIAN HAN |
| author_sort | QING-QIN TANG |
| collection | DOAJ |
| description | The Kuanchuanpu biota (ca. 535 Ma) from the basal Cambrian in South China yields various phosphatized, three-dimensionally
preserved microscopic fossils, such as animal embryos, cyanobacteria, and algae. This provides an exceptional
window for investigating the rapid divergent evolution of animal phyla in the early Cambrian ocean. However,
the fossil eukaryotic algae are poorly documented and are not properly incorporated into the conceptual food web of
the Cambrian ocean ecosystem. In this study, we report a new taxon of calathiform alga, Calathophycus irregulatus
Tang gen. et sp. nov., and an indeterminate alga, from the Kuanchuanpu biota. Calathophycus irregulatus can be distinguished
from other reported phosphatized multicellular algal fossils from the Kuanchuanpu biota and the Ediacaran
Weng’an biota (Guizhou Province, China), based on the external morphology and features of cell clump aggregation.
The observation of C. irregulatus and the indeterminate alga indicates a certain diversity of algae at the beginning of the
Cambrian. Concerning the regularly or irregularly shaped multicellular algal fossils from the Kuanchuanpu Formation,
co-occurring spherical fossils, previously interpreted as “cleavage stage” of animal embryos, should be reconsidered
in affinity. |
| first_indexed | 2024-12-12T12:21:29Z |
| format | Article |
| id | doaj.art-5a949a4be6c745e9a0446d00535664ea |
| institution | Directory Open Access Journal |
| issn | 0567-7920 1732-2421 |
| language | English |
| last_indexed | 2024-12-12T12:21:29Z |
| publishDate | 2022-06-01 |
| publisher | Institute of Paleobiology PAS |
| record_format | Article |
| series | Acta Palaeontologica Polonica |
| spelling | doaj.art-5a949a4be6c745e9a0446d00535664ea2022-12-22T00:24:39ZengInstitute of Paleobiology PASActa Palaeontologica Polonica0567-79201732-24212022-06-0167231732710.4202/app.00946.2021New materials of multicellular algae from the earliest Cambrian Kuanchuanpu biota in South ChinaQING-QIN TANG0YA-JUAN ZHENG1SONG QIN2YIN-CHU WANG3XIAO-GUANG YANG,4XING WANG5JIE SUN6KENTARO UESUGI7TSUYOSHI KOMIYA8JIAN HAN9Shaanxi Key Laboratory of Early Life and Environments (SKLELE), State Key Laboratory of Continental Dynamics (SKLCD), Department of Geology, Northwest University, Xi’an 710069, China.School of Earth Science and Resources, Key Laboratory of Western China’s Mineral Resources and Geological Engineering, Ministry of Education, Chang’an University, Xi’an 710054, China.Yantai Institute of Coastal Zone Research, Chinese Academy of Science, Yantai, 264003, China. Yantai Institute of Coastal Zone Research, Chinese Academy of Science, Yantai, 264003, China.Shaanxi Key Laboratory of Early Life and Environments (SKLELE), State Key Laboratory of Continental Dynamics (SKLCD), Department of Geology, Northwest University, Xi’an 710069, China.Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266071, China.Shaanxi Key Laboratory of Early Life and Environments (SKLELE), State Key Laboratory of Continental Dynamics (SKLCD), Department of Geology, Northwest University, Xi’an 710069, China.Japan Synchrotron Radiation Research Institute (JASRI), Hyogo, Japan.Department of Earth Science and Astronomy, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan.Shaanxi Key Laboratory of Early Life and Environments (SKLELE), State Key Laboratory of Continental Dynamics (SKLCD), Department of Geology, Northwest University, Xi’an 710069, China.The Kuanchuanpu biota (ca. 535 Ma) from the basal Cambrian in South China yields various phosphatized, three-dimensionally preserved microscopic fossils, such as animal embryos, cyanobacteria, and algae. This provides an exceptional window for investigating the rapid divergent evolution of animal phyla in the early Cambrian ocean. However, the fossil eukaryotic algae are poorly documented and are not properly incorporated into the conceptual food web of the Cambrian ocean ecosystem. In this study, we report a new taxon of calathiform alga, Calathophycus irregulatus Tang gen. et sp. nov., and an indeterminate alga, from the Kuanchuanpu biota. Calathophycus irregulatus can be distinguished from other reported phosphatized multicellular algal fossils from the Kuanchuanpu biota and the Ediacaran Weng’an biota (Guizhou Province, China), based on the external morphology and features of cell clump aggregation. The observation of C. irregulatus and the indeterminate alga indicates a certain diversity of algae at the beginning of the Cambrian. Concerning the regularly or irregularly shaped multicellular algal fossils from the Kuanchuanpu Formation, co-occurring spherical fossils, previously interpreted as “cleavage stage” of animal embryos, should be reconsidered in affinity.algal fossilsbowl-shaped fossilsearly cambriankuanchuanpu biota |
| spellingShingle | QING-QIN TANG YA-JUAN ZHENG SONG QIN YIN-CHU WANG XIAO-GUANG YANG, XING WANG JIE SUN KENTARO UESUGI TSUYOSHI KOMIYA JIAN HAN New materials of multicellular algae from the earliest Cambrian Kuanchuanpu biota in South China Acta Palaeontologica Polonica algal fossils bowl-shaped fossils early cambrian kuanchuanpu biota |
| title | New materials of multicellular algae from the earliest Cambrian Kuanchuanpu biota in South China |
| title_full | New materials of multicellular algae from the earliest Cambrian Kuanchuanpu biota in South China |
| title_fullStr | New materials of multicellular algae from the earliest Cambrian Kuanchuanpu biota in South China |
| title_full_unstemmed | New materials of multicellular algae from the earliest Cambrian Kuanchuanpu biota in South China |
| title_short | New materials of multicellular algae from the earliest Cambrian Kuanchuanpu biota in South China |
| title_sort | new materials of multicellular algae from the earliest cambrian kuanchuanpu biota in south china |
| topic | algal fossils bowl-shaped fossils early cambrian kuanchuanpu biota |
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