alexa Phylogenetic position of mammoth and Steller's sea cow within Tethytheria demonstrated by mitochondrial DNA sequences.
Agri and Aquaculture

Agri and Aquaculture

Journal of Marine Science: Research & Development

Author(s): Ozawa T, Hayashi S, Mikhelson VM

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Abstract Here we report DNA sequences from mitochondrial cytochrome b gene segments (1,005 base pairs per species) for the extinct woolly mammoth (Mammuthus primigenius) and Steller's sea cow (Hydrodamalis gigas) and the extant Asian elephant (Elephas maximus), the Western Indian manatee (Trichechus manatus), and the hyrax (Procavia capensis). These molecular data have allowed us to construct the phylogeny for the Tethytheria. Our molecular data resolve the trichotomy between the two species of living elephants and the mammoth and confirm that the mammoth was more closely related to the Asian elephant than to the African elephant. Our data also suggest that the sea cow-dugong divergence was likely as ancient as the dugong-manatee split, and it appears to have been much earlier (22 million years ago) than had been previously estimated (4-8 million years ago) by immunological comparison.
This article was published in J Mol Evol and referenced in Journal of Marine Science: Research & Development

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