The DOI matches its Crossref record.
Proterozoic stromatolite zonation
Abstract
The zonation of the Proterozoic of the USSR is reviewed and extension to other places is attempted. Preliminary results are: some of the columnar stromatolites of northern Eurasia occur in other continents and in the same stratigraphic ranges; some of the forms (9species9) of the distinctive columnar types have intercontinental distribution, such as Gruneria biwabikia from Australia and North America. Pre-upper Proterozoic (pre-Riphean) strata also contain distinctive stromatolites of intercontinental distribution not known in younger strata, such as the new groups (9genera9) Gruneria and Katerina. The above, together with progress in microbiota studies offers hope that at least a gross worldwide biological subdivision of Proterozoic will be practicable. The Belt Series seem to represent only one of the Soviet stromatolite zones.
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
Cited by
Microbial carbonates: the geological record of calcified bacterial–algal mats and biofilms
Riding, R. (2000) · Sedimentology · doi:10.1046/j.1365-3091.2000.00003.x · Cited by 1,562
Beginnings of biospheric evolution and their biogeochemical consequences
Cloud, P. (1976) · Paleobiology · doi:10.1017/s009483730000498x · Cited by 333
Self-citationCyanobacterial Mats and Stromatolites
Stal, L. J. (2012) · Ecology of Cyanobacteria II · doi:10.1007/978-94-007-3855-3_4 · Cited by 305
Largest known microbialites discovered in Lake Van, Turkey
Kempe, S., Kazmierczak, J., Landmann, G., Konuk, T., Reimer, A., & Lipp, A. (1991) · Nature · doi:10.1038/349605a0 · Cited by 263
Precambrian Columnar Stromatolite Diversity: Reflection of Metazoan Appearance
Awramik, S. M. (1971) · Science · doi:10.1126/science.174.4011.825 · Cited by 263
Metadata
- Authors
- Cloud, P. E., & Semikhatov, M. A.
- Venue
- American Journal of Science
- Publisher
- American Journal of Science (AJS)
- Published
- 1969-11-01
- Volume
- 267
- Issue
- 9
- Pages
- 1017-1061
- ISSN
- 0002-9599 (ISSN-L)
- OpenAlex
- W2324086590
- Cited by
- 175
- References
- 0
- FWCI
- 10.96
- 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: Proterozoic stromatolite zonation. https://app.cochat.ai/papers/10.2475/ajs.267.9.1017
- The paper
- Cloud, P. E., & Semikhatov, M. A. (1969). Proterozoic stromatolite zonation. American Journal of Science. https://doi.org/10.2475/ajs.267.9.1017
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.
