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Updated: Mar 9, 2026
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An Intestinal Gut Organ Culture System for Analyzing Host-Microbiota Interactions
Published on: June 30, 2021
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Minerals in the gut: scoping a Cambrian digestive system
K M Strang1, H A Armstrong1, D A T Harper1
1Palaeoecosystems Group, Department of Earth Sciences , Durham University , Durham DH1 1LE , UK.
Royal Society Open Science
|December 27, 2016
Summary
Exceptionally preserved Cambrian fossils reveal unique tissue-specific preservation. Gut contents of *Campanamuta mantonae* were mineralized with calcium phosphate, while muscles were silicified, offering insights into early life taphonomy.
Area of Science:
- Paleontology
- Geochemistry
- Evolutionary Biology
Background:
- The Sirius Passet Lagerstätte in North Greenland preserves an Early Cambrian mat-ground community.
- This community includes iconic arthropods and lobopods, some also found in the Burgess Shale.
Purpose of the Study:
- To investigate the unique preservation of the non-mineralized arthropod *Campanamuta mantonae*.
- To understand the tissue-specific taphonomy, including gut and muscle preservation.
Main Methods:
- High-resolution photography
- Scanning electron imaging
- Elemental mapping of *Campanamuta mantonae* specimens
Main Results:
- Gut contents showed high calcium phosphate concentration (francolite).
- Adjacent muscles were silicified.
- This indicates distinct, tissue-specific taphonomic pathways.
Conclusions:
- Calcium phosphate precipitation in guts likely occurred rapidly post-mortem via 'crystal seed' processes.
- Silicification of muscles followed due to localized water chemistry changes.
- This study documents two distinct yet mechanistically similar taphonomic pathways in an Early Cambrian Lagerstätte.
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