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Analyses of mitochondrial genomes strongly support a hippopotamus-whale clade

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Ursing, Björn M., Arnason, Ulfur·1998·Proceedings of the Royal Society of London. Series B: Biological Sciences
DOI 10.1098/rspb.1998.0567PMC PMC1689531
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Abstract

Although the sister-group relationship between Cetacea and Artiodactyla is widely accepted, the actual artiodactyl group which is closest to Cetacea has not been conclusively identified. In the present study, we have sequenced the complete mitochondrial genome of the hippopotamus, Hippopotamus amphibius, and included it in phylogenetic analyses together with 15 other placental mammals. These analyses separated the hippopotamus from the other suiform included, the pig, and identified the hippopotamus as the artiodactyl sister group of the cetaceans, thereby making both. Artiodactyla and the suborder. Suiformes paraphyletic. The divergence between the hippopotamid and cetacean lineages was calculated using this molecular data and was estimated at ca. 54 Ma BP.

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  • The Cetacea and the Hippopotamidae are believed to share a common ancestry, with initial divergence estimated around 54 million years ago.

    “The Cetacea and the Hippopotamidae are believed to share a common ancestry, with initial divergence estimated around 54 million years ago (Ursing and Arnason 1998).”

    From Choeropsis liberiensis (Artiodactyla: Hippopotamidae) (2019) · cites this paper as Ursing and Arnason 1998

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Authors
Ursing, B. M., & Arnason, U.
Affiliations
  • Lund University (SE)
  • Department of Genetics, Division of Evolutionary Molecular Systematics, Lund University, Sölvegatan 29, S–223 62 Lund, Sweden
Corresponding author
Ursing, Björn M.
Venue
Proceedings of the Royal Society of London. Series B: Biological Sciences
Publisher
The Royal Society
Published
1998-12-07
Volume
265
Issue
1412
Pages
2251-2255
ISSN
  • 0080-4649 (ISSN-L)
  • 0962-8452
  • 1471-2954
DOI
10.1098/rspb.1998.0567
PMC
PMC1689531
OpenAlex
W2018354418
Cited by
116
References
3
Citations by year
2024: 2 · 2023: 4 · 2021: 3 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 1 · 2016: 5 · 2015: 4 · 2014: 6 · 2013: 2
FWCI
10.89
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the Royal Society B Biological Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • European Commission
  • University of Cape Town
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Plant Diversity and Evolution
Keywords
hippopotamus, mitochondrial genome, cetacean evolution, Artiodactyla, sister group relationships, divergence time estimation, paraphyly
MeSH terms
Animals, Artiodactyla, DNA, Mitochondrial, Phylogeny, Whales, Codon, Initiator

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