Reconstruction of the first consumer-driven marine ecosystem on Earth, perspectives from early Cambrian small skeletal fossils from China
Keywords: marine ecosystem, small skeletal fossils, Cambrian Explosion, China, Konversat-Lagerstatten
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| Published in: | Estonian journal of earth sciences Vol. 72; no. 1; p. 169 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
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Tallinn
Estonian Academy Publishers
01-03-2023
Teaduste Akadeemia Kirjastus (Estonian Academy Publishers) |
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| Abstract | Keywords: marine ecosystem, small skeletal fossils, Cambrian Explosion, China, Konversat-Lagerstatten |
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| AbstractList | Biological activity was the major triggering factor driving Earthâs organic and inorganic cycles across the biosphere, lithosphere, and atmosphere. A key question in the evolution of Earthâs ecosystem is when and how different animals emerged and flourished and how their appearance impacted the hydrosphere-atmosphere-lithosphere cycles. The Cambrian Explosion of metazoans in the EdiacaranâCambrian boundary interval resulted in sudden appearance of most of the readily fossilizable modern animal groups as macro-consumers in the Earthâs oceans. This explosive radiation event led for the first time to the emergence and diversification of animals on Earth, to the establishment of complex trophic webs with animals as consumers, and marks the onset of the Phanerozoic oceanic ecosystem. Our presentation aims to discuss the at least half-billion-year-old world of tubular and conical shelled organisms (sponges, conulariids, chancelloriids, hyoliths, mollusks, tommotiids, and other lophotrochozoans) that are unseen in the present-day oceans but were recovered by us from the siliciclastic and carbonate rocks in and outside of China. Additionally, to study the body fossils of exceptionally preserved biotas (Konversat-Lagerstätten) across China, efforts are underway to understand how the early animals, notably early bilaterians, created the over 500-million-year-old oceanic ecosystems without the influence of land plants, which appeared later. Keywords: marine ecosystem, small skeletal fossils, Cambrian Explosion, China, Konversat-Lagerstatten Biological activity was the major triggering factor driving Earth's organic and inorganic cycles across the biosphere, lithosphere, and atmosphere. A key question in the evolution of Earth's ecosystem is when and how different animals emerged and flourished and how their appearance impacted the hydrosphere-atmosphere-lithosphere cycles. The Cambrian Explosion of meta -zoans in the Ediacaran-Cambrian boundary interval resulted in sudden appearance of most of the readily fossilizable modern animal groups as macro-consumers in the Earth's oceans. This explosive radiation event led for the first time to the emergence and diversification of animals on Earth, to the establishment of complex trophic webs with animals as consumers, and marks the onset of the Phanerozoic oceanic ecosystem. Our presentation aims to discuss the at least half-billion-year-old world of tubular and conical shelled organisms (sponges, conulariids, chancelloriids, hyoliths, mollusks, tommotiids, and other lophotrochozoans) that are unseen in the present-day oceans but were recovered by us from the siliciclastic and carbonate rocks in and outside of China. Additionally, to study the body fossils of exceptionally preserved biotas (Konversat-Lagerstätten) across China, efforts are underway to understand how the early animals, notably early bilaterians, created the over 500-million-year-old oceanic ecosystems without the influence of land plants, which appeared later. Biological activity was the major triggering factor driving Earth's organic and inorganic cycles across the biosphere, lithosphere, and atmosphere. A key question in the evolution of Earth's ecosystem is when and how different animals emerged and flourished and how their appearance impacted the hydrosphere-atmosphere-lithosphere cycles. The Cambrian Explosion of metazoans in the Ediacaran-Cambrian boundary interval resulted in sudden appearance of most of the readily fossilizable modern animal groups as macro-consumers in the Earth's oceans. This explosive radiation event led for the first time to the emergence and diversification of animals on Earth, to the establishment of complex trophic webs with animals as consumers, and marks the onset of the Phanerozoic oceanic ecosystem. Our presentation aims to discuss the at least half-billion-year-old world of tubular and conical shelled organisms (sponges, conulariids, chancelloriids, hyoliths, mollusks, tommotiids, and other lophotrochozoans) that are unseen in the present-day oceans but were recovered by us from the siliciclastic and carbonate rocks in and outside of China. Additionally, to study the body fossils of exceptionally preserved biotas (Konversat-Lagerstätten) across China, efforts are underway to understand how the early animals, notably early bilaterians, created the over 500-million-year-old oceanic ecosystems without the influence of land plants, which appeared later. |
| Audience | Academic |
| Author | Holmer, Lars E Zhang, Zhifei Liang, Yue Hu, Yazhou Liu, Fan |
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| Copyright | COPYRIGHT 2023 Estonian Academy Publishers 2023. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. |
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| DOI | 10.3176/earth.2023.40 |
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| Snippet | Keywords: marine ecosystem, small skeletal fossils, Cambrian Explosion, China, Konversat-Lagerstatten Biological activity was the major triggering factor driving Earth's organic and inorganic cycles across the biosphere, lithosphere, and atmosphere. A key... Biological activity was the major triggering factor driving Earthâs organic and inorganic cycles across the biosphere, lithosphere, and atmosphere. A key... |
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| SubjectTerms | Animals Atmosphere Biological activity Biosphere Cambrian Cambrian Explosion Carbonate rocks Carbonates China Consumers Earth Ecosystems Environmental aspects Evolution Fossils Hydrosphere Konversat-Lagerstatten konversat-lagerstätten Lithosphere marine ecosystem Marine ecosystems Mollusks Oceans Phanerozoic Radiation Shellfish small skeletal fossils |
| Title | Reconstruction of the first consumer-driven marine ecosystem on Earth, perspectives from early Cambrian small skeletal fossils from China |
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