The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
Phylogenetic relationships among cetartiodactyls based on insertions of short and long interpersed elements: Hippopotamuses are the closest extant relatives of whales
Open accessAbstract
Insertion analysis of short and long interspersed elements is a powerful method for phylogenetic inference. In a previous study of short interspersed element data, it was found that cetaceans, hippopotamuses, and ruminants form a monophyletic group. To further resolve the relationships among these taxa, we now have isolated and characterized 10 additional loci. A phylogenetic analysis of these data was able to resolve relationships among the major cetartiodactyl groups, thereby shedding light on the origin of whales. The results indicated (i) that cetaceans are deeply nested within Artiodactyla, (ii) that cetaceans and hippopotamuses form a monophyletic group, (iii) that pigs and peccaries form a monophyletic group to the exclusion of hippopotamuses, (iv) that chevrotains diverged first among ruminants, and (v) that camels diverged first among cetartiodactyls. These findings lead us to conclude that cetaceans evolved from an immediate artiodactyl, not mesonychian, ancestor.
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
Primer-Directed Enzymatic Amplification of DNA with a Thermostable DNA Polymerase
Saiki, R. K., Gelfand, D. H., Stoffel, S., Scharf, S. J., Higuchi, R., Horn, G. T., Mullis, K. B., & Erlich, H. A. (1988) · Science · doi:10.1126/science.2448875 · Cited by 17,719
Molecular evidence from retroposons that whales form a clade within even-toed ungulates
Shimamura, M., Yasue, H., Ohshima, K., Abe, H., Kato, H., Kishiro, T., Goto, M., Munechika, I., & Okada, N. (1997) · Nature · doi:10.1038/41759 · Cited by 399
Self-citationPHYLOGENETIC ANALYSIS IN MOLECULAR EVOLUTIONARY GENETICS
Nei, M. (1996) · Annual Review of Genetics · doi:10.1146/annurev.genet.30.1.371 · Cited by 349
Montgelard, C., Catzeflis, F. M., & Douzery, E. (1997) · Molecular Biology and Evolution · doi:10.1093/oxfordjournals.molbev.a025792 · Cited by 279
Cited by
The new animal phylogeny: Reliability and implications
Adoutte, A., Balavoine, G., Lartillot, N., Lespinet, O., Prud'homme, B., & de Rosa, R. (2000) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.97.9.4453 · Cited by 512
Rokas, A., & Carroll, S. B. (2006) · PLoS Biology · doi:10.1371/journal.pbio.0040352 · Cited by 315
Primate jumping genes elucidate strepsirrhine phylogeny.
Roos, C., Schmitz, J., & Zischler, H. (2004) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0403852101 · Cited by 262
Hof, P. R., & Van Der Gucht, E. (2007) · The Anatomical Record · doi:10.1002/ar.20407 · Cited by 257
From land to water: The origin of whales, dolphins and porpoises
Thewissen, J. G. M., Cooper, L. N., George, J. C., & Bajpai, S. (2009) · Evolution: Education and Outreach · doi:10.1007/s12052-009-0135-2 · Cited by 178
Metadata
- Authors
- Nikaido, M., Rooney, A. P., & Okada, N.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1999-08-31
- Volume
- 96
- Issue
- 18
- Pages
- 10261-10266
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2166860692
- Cited by
- 424
- References
- 4
- FWCI
- 27.89
- Type
- journal article
- Language
- en
- Open access
- green
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: Phylogenetic relationships among cetartiodactyls based on insertions of short and long interpersed elements: Hippopotamuses are the closest extant relatives of whales. https://app.cochat.ai/papers/10.1073/pnas.96.18.10261
- The paper
- Nikaido, M., Rooney, A. P., & Okada, N. (1999). Phylogenetic relationships among cetartiodactyls based on insertions of short and long interpersed elements: Hippopotamuses are the closest extant relatives of whales. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.96.18.10261
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.