The Burgess Shale paleocommunity with new insights from Marble Canyon, British Columbia
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The middle (Wuliuan Stage) Cambrian Burgess Shale is famous for its exceptional preservation of diverse and abundant soft-bodied animals through the “thick” Stephen Formation. However, with the exception of the Walcott Quarry (Fossil Ridge) and the stratigraphically older Tulip Beds (Mount Stephen), which are both in Yoho National Park (British Columbia), quantitative assessments of the Burgess Shale have remained limited. Here we first provide a detailed quantitative overview of the diversity and structure of the Marble Canyon Burgess Shale locality based on 16,438 specimens. Located 40 km southeast of the Walcott Quarry in Kootenay National Park (British Columbia), Marble Canyon represents the youngest site of the “thick” Stephen Formation. We then combine paleoecological data sets from Marble Canyon, Walcott Quarry, Tulip Beds, and Raymond Quarry, which lies approximately 20 m directly above the Walcott Quarry, to yield a combined species abundance data set of 77,179 specimens encompassing 234 species-level taxa. Marble Canyon shows significant temporal changes in both taxonomic and ecological groups, suggesting periods of stasis followed by rapid turnover patterns at local and short temporal scales. At wider geographic and temporal scales, the different Burgess Shale sites occupy distinct areas in multivariate space. Overall, this suggests that the Burgess Shale paleocommunity is far patchier than previously thought and varies at both local and regional scales through the “thick” Stephen Formation. This underscores that our understanding of Cambrian diversity and ecological networks, particularly in early animal ecosystems, remains limited and highly dependent on new discoveries.
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In the Walcott Quarry, only one complete specimen of Anomalocaris is known, but tens of fossil fragments can be confidently attributed to this genus based on key morphological features.
“In the Walcott Quarry, only one complete specimen of Anomalocaris is known, but tens of fossil fragments can be confidently attributed to this genus based on key morphological features (Nanglu, Caron & Gaines, 2020).”
From Probability-based preservational variations within the early Cambrian Chengjiang biota (China) (2022) · cites this paper as Nanglu, Caron & Gaines, 2020
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Additional file 2 of Tube-dwelling in early animals exemplified by Cambrian scalidophoran worms
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Additional file 3 of Tube-dwelling in early animals exemplified by Cambrian scalidophoran worms
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Reply to Comment on: Omnidens appendages and the origin of radiodont mouthparts
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Additional file 1 of Tube-dwelling in early animals exemplified by Cambrian scalidophoran worms
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Additional file 4 of Tube-dwelling in early animals exemplified by Cambrian scalidophoran worms
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Comparing biotic compositions of Silurian Lagerstätten
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- Authors
- Nanglu, K., Caron, J.-B., & Gaines, R. R.
- Affiliations
- University of Toronto (CA)
- Pomona College (US)
- Venue
- Paleobiology
- Publisher
- Cambridge University Press (CUP)
- Published
- 2020-02
- Volume
- 46
- Issue
- 1
- Pages
- 58-81
- ISSN
- 0094-8373 (ISSN-L)
- 1938-5331
- OpenAlex
- W3008824536
- Cited by
- 81
- References
- 82
- Citations by year
- 2026: 5 · 2025: 12 · 2024: 8 · 2023: 16 · 2022: 15 · 2021: 21 · 2020: 4
- FWCI
- 8.31
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Paleobiology (publishedVersion)
- 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
- Burgess Shale, Marble Canyon, Cambrian, soft-bodied fossils, species abundance, taxonomic turnover, ecological networks, paleoecology, Kootenay National Park
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