Cited by 172Paleontology and Stratigraphy of FossilsEvolution and Paleontology StudiesPaleontology and Evolutionary Biology

The Rise of Animals in a Changing Environment: Global Ecological Innovation in the Late Ediacaran

Open access
Droser, Mary L., Tarhan, Lidya G., Gehling, James G.·2017·Annual Review of Earth and Planetary Sciences

Abstract

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.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1146/annurev-earth-063016-015645

Cites

147 of 147 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Both the diversity and taxonomic disparity of macroscopic soft-bodied organisms increase significantly after ~560 Ma.

    “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]

    The White Sea Assemblage section reports a wide range of new taxa and pronounced increases in body-plan diversity in younger Ediacaran assemblages. The section on second-wave innovation also describes many novel morphologies relative to the older Avalon Assemblage. The paper does not establish ~560 Ma as the threshold for that increase, and it notes a subsequent reduction in diversity with the Nama Assemblage. Page numbers were not available in our copy. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • 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.

    “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]

    The White Sea Assemblage section reports a notable reduction in diversity with the appearance of the Nama Assemblage, and the Discussion places the disappearance of most Ediacara taxa before the Cambrian. The copy does not establish that the main decrease occurred specifically 5–10 million years before the boundary; it also cautions that the apparent reduction may reflect preservation or environmental differences. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • In the post-glacial Ediacaran (635 to 541 Ma), macroscopic body fossils at ~570 Ma were 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.

    “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”
  • Ediacaran body fossils are limited to the interval between ~570 Ma and the base of the Cambrian roughly 30 million years later.

    “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).”
  • 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.

    “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).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

2 of the 149 references couldn’t be matched to a known paper.

Research works printed but not linked: 10

  1. [6]6. Bottjer DJ, Hagadorn JW, Dornbos SQ. 2000. The Cambrian substrate revolution. GSA Today 10(9):1-7
  2. [20]20. Clapham ME, Narbonne GM. 2002. Ediacaran epifaunal tiering. Geology 30(7):627-30
  3. [21]21. Clapham ME, Narbonne GM, Gehling JG. 2003. Paleoecology of the oldest known animal communities: Ediacaran assemblages at Mistaken Point, Newfoundland. Paleobiology 29(4):527-44
  4. [41]41. Evans SD, Droser ML, Gehling JG. 2014. Does size really matter?: Body size distribution and growth of Dickinsonia costata from Nilpena, South Australia. Geol. Soc. Am. Abstr. Progr. 46(6):335
  5. [63]63. Grazhdankin D. 2004. Patterns of distribution in the Ediacaran biotas: facies versus biogeography and evolu- tion. Paleobiology 30(2):203-21
  6. [66]66. Grazhdankin DV, Maslov AV, Mustill TMR, Krupenin MT. 2005. The Ediacaran White Sea biota in the Central Urals. Doklady Earth Sci. 401(3):382-85
  7. [69]69. Hagadorn JW, Fedo CM, Waggoner BM. 2000. Early Cambrian Ediacaran-type fossils from California. J. Paleontol. 74(4):731-40
  8. [126]126. Seilacher A, Pfl üger F. 1994. From biomats to benthic agriculture: a biohistoric revolution. In Biostabilization of Sediments, ed. WE Krumbein, DM Paterson, LJ Stal, pp. 97-105. Oldenburg, Ger.: Bib. Inf.-Syst. Carl von Ossietzky Univ. Oldenburg
  9. [135]135. Steiner M, Reitner J. 2001. Evidence of organic structures in Ediacara-type fossils and associated microbial mats. Geology 29(12):1119-22
  10. [142]142. Tarhan LG, Hughes NC, Myrow PM, Bhargava ON, Ahluwalia AD, Kudryavtsev AB. 2014b. Precambrian- Cambrian boundary interval occurrence and form of the enigmatic tubular body fossil Shaanxilithes ningquiangensis from the Lesser Himalaya of India. Palaeontology 57(2):283-98

Cited by

Sorted by citations

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
Published
2017-08-30
Volume
45
Issue
1
Pages
593-617
ISSN
  • 0084-6597 (ISSN-L)
  • 1545-4495
OpenAlex
W2592803045
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
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

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review