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Six rhinoceros not five by Jan Robovský, Prithiviraj Fernando and Colin P. Groves.

This is a brief report about new revision of white rhinoceros prepared by Colin P. Groves, Prithiviraj Fernando and Jan Robovský (PLoS ONE 5, 1–15, 2010). On re-assessing the taxonomy of the two forms of white rhinoceroses they find them to be morphologically and genetically distinct, warranting the recognition of the taxa formerly designated as subspecies: Ceratotherium simum simum the southern form and Ceratotherium simum cottoni the northern form, as two distinct species Ceratotherium simum and Ceratotherium cottoni respectively. The recognition of the northern form as a distinct species has profound implications for its conservation.