The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Preservation of Chitin in 25-Million-Year-Old Fossils
Abstract
Chitin is present in fossil insects from the Oligocene (24.7 million years ago) lacustrine shales of Enspel, Germany. This result, which was obtained by analytical pyrolysis, extends by nearly 25 million years the length of time that chemically detectable remains of this biomolecule are known to survive. The embedding sediment is dominated by diatoms, which reflect high productivity in the paleolake. The primary control on the preservation of chitin is thus not time; it may persist in older sediments where suitable paleoenvironmental conditions prevailed.
Overview
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.
Integrity signals
Registry
Cites
Statistics
Verification
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.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Burgess Shale-type fossils from a Lower Cambrian shallow-shelf sequence in northwestern Canada
Butterfield, N. J. (1994) · Nature · doi:10.1038/369477a0 · Cited by 114
Cited by
Payne, C. M., Knott, B. C., Mayes, H. B., Hansson, H., Himmel, M. E., Sandgren, M., Ståhlberg, J., & Beckham, G. T. (2015) · Chemical Reviews · doi:10.1021/cr500351c · Cited by 855
Ancient biomolecules: Their origins, fossilization, and role in revealing the history of life
Briggs, D. E. G., & Summons, R. E. (2014) · BioEssays · doi:10.1002/bies.201400010 · Cited by 223
Self-citationProteins in Art, Archaeology, and Paleontology: From Detection to Identification
Dallongeville, S., Garnier, N., Rolando, C., & Tokarski, C. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00037 · Cited by 172
Klompmaker, A. A., Portell, R. W., & Frick, M. G. (2017) · Palaeontology · doi:10.1111/pala.12314 · Cited by 82
Butterfield, N. J. (2008) · Journal of Paleontology · doi:10.1666/07-066.1 · Cited by 62
Metadata
- Authors
- Stankiewicz, B. A., Briggs, D. E. G., Evershed, R. P., Flannery, M. B., & Wuttke, M.
- Venue
- Science
- Published
- 1997-06-06
- Volume
- 276
- Issue
- 5318
- Pages
- 1541-1543
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2156114045
- Cited by
- 190
- References
- 1
- FWCI
- 10.73
- Type
- journal article
- Language
- en
- Open access
- closed
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
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Preservation of Chitin in 25-Million-Year-Old Fossils. https://app.cochat.ai/papers/10.1126/science.276.5318.1541
- The paper
- Stankiewicz, B. A., Briggs, D. E. G., Evershed, R. P., Flannery, M. B., & Wuttke, M. (1997). Preservation of Chitin in 25-Million-Year-Old Fossils. Science. https://doi.org/10.1126/science.276.5318.1541
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
