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The Rise of Animals in a Changing Environment: Global Ecological Innovation in the Late Ediacaran
Open accessAbstract
The evolutionary trajectory of early complex life on Earth is interpreted largely from the fossils of the Precambrian soft-bodied Ediacara Biota, which appeared and evolved during a time of dynamic biogeochemical and environmental fluctuation in the global ocean. The Ediacara Biota is historically divided into three successive Assemblages—the Avalon, the White Sea, and the Nama—which are marked by the appearance of novel biological traits and ecological strategies. In particular, the younger White Sea and Nama Assemblages record a “second wave” of ecological innovations, which included not only the development of uniquely Ediacaran body plans and ecologies, such as matground adaptations, but also the dual emergence of bilaterian-grade animals and Phanerozoic-style ecological innovations, including spatial heterogeneity, complex reproductive strategies, ecospace utilization, motility, and substrate competition. The late Ediacaran was an evolutionarily dynamic time characterized by strong environmental control over the distribution of taxa in time and space.
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“but both the diversity and taxonomic disparity of macroscopic soft-bodied organisms increase significantly after ~560 Ma (3,60).”
From Integrated records of environmental change and evolution challenge the Cambrian Explosion (2019) · cites this paper as [3]
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“A literal reading of the record shows the main decrease in soft-bodied benthic biodiversity to have occurred ~5-10 Myr prior to the Ediacaran-Cambrian boundary (3,85).”
From Integrated records of environmental change and evolution challenge the Cambrian Explosion (2019) · cites this paper as [3]
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“We then jump to the post-glacial Ediacaran (635 to 541 Ma), with macroscopic body fossils at ∼570 Ma (Pu et al., 2016; rangeomorphs often, though not universally, assumed to be animals) followed by a great diversity of often large, dominantly soft-bodied animals, including bilaterians, and parallel advances in ecological complexity between ∼570 Ma and the Precambrian-Cambrian boundary (reviewed in”
From Oxygenation, Life, and the Planetary System during Earth's Middle History: An Overview (2021) · cites this paper as Droser et al., 2017
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“Despite the extraordinary array of early animals and lifestyles on display, the Ediacaran body fossils are limited to the interval between ∼570 Ma and the base of the Cambrian roughly 30 million years later (reviewed in Xiao and Laflamme, 2009; Droser et al., 2017; Darroch et al., 2018).”
From Oxygenation, Life, and the Planetary System during Earth's Middle History: An Overview (2021) · cites this paper as Droser et al., 2017
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“The latter part of the Ediacaran witnessed impressive diversification among the animals and corresponding ecosystem complexity, including the emergence of bilaterians, large mostly soft body plans, the earliest infaunal activity, mobility, advances in heterotrophy, possible stem-group molluscs, and even the first skeletons (reviewed in Droser et al., 2017).”
From Oxygenation, Life, and the Planetary System during Earth's Middle History: An Overview (2021) · cites this paper as Droser et al., 2017
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Metadata
- Authors
- Droser, M. L., Tarhan, L. G., & Gehling, J. G.
- Affiliations
- University of California, Riverside (US)
- Yale University (US)
- South Australia Museum, North Terrace, Adelaide, South Australia 5000, Australia;
- Venue
- Annual Review of Earth and Planetary Sciences
- Publisher
- Annual Reviews
- Published
- 2017-08-30
- Volume
- 45
- Issue
- 1
- Pages
- 593-617
- ISSN
- 0084-6597 (ISSN-L)
- 1545-4495
- OpenAlex
- W2592803045
- Semantic Scholar
- 2cb246bf81e209e56705c780b75394a0ae6d525d
- Cited by
- 172
- References
- 149
- Citations by year
- 2026: 17 · 2025: 18 · 2024: 19 · 2023: 16 · 2022: 17 · 2021: 22 · 2020: 23 · 2019: 16 · 2018: 19 · 2017: 5
- FWCI
- 2.13
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Annual Review of Earth and Planetary Sciences (publishedVersion)
- Helmholtz Centre for Ocean Research Kiel (GEOMAR) (acceptedVersion)
- Funders
- National Science Foundation
- National Aeronautics and Space Administration (NNG04GJ42G)
- National Geographic Society
- Australian Research Council (DP0453393)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
- Keywords
- Ediacara biota, Late Ediacaran, early animal evolution, green innovation, environmental change, spatial heterogeneity, reproductive strategies, motility, substrate competition, soft-bodied fossils
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