The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
New light on the Origin of Birds and Crocodiles
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
Flying ability of Archaeopteryx
YALDEN, D. W. (1971) · Nature · doi:10.1038/231127a0 · Cited by 26
Cited by
Witmer, L. M. (1997) · Journal of Vertebrate Paleontology · doi:10.1080/02724634.1997.10011027 · Cited by 544
The origin and evolution of dinosaurs
Sereno, P. C. (1997) · Annual Review of Earth and Planetary Sciences · doi:10.1146/annurev.earth.25.1.435 · Cited by 426
Archaeopteryx and the origin of birds
OSTROM, J. H. (1976) · Biological Journal of the Linnean Society · doi:10.1111/j.1095-8312.1976.tb00244.x · Cited by 361
OSTROM, J. H. (1973) · Nature · doi:10.1038/242136a0 · Cited by 168
Pre‐modern Birds: Avian Divergences in the Mesozoic
O'Connor, J., Chiappe, L. M., & Bell, A. (2011) · Living Dinosaurs · doi:10.1002/9781119990475.ch3 · Cited by 163
Metadata
- Authors
- WALKER, A. D.
- Venue
- Nature
- Published
- 1972-06
- Volume
- 237
- Issue
- 5353
- Pages
- 257-263
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W1996391429
- Cited by
- 164
- References
- 1
- FWCI
- 10.71
- 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 ›
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How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: New light on the Origin of Birds and Crocodiles. https://app.cochat.ai/papers/10.1038/237257a0
- The paper
- WALKER, A. D. (1972). New light on the Origin of Birds and Crocodiles. Nature. https://doi.org/10.1038/237257a0
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.
