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On the origin of Metridiochoerus and Potamochoerus.

Autor Van der Made, Jan
Fecha de publicación 8-ago-2011
ResumenThe African fossil Suidae were studied intensively, but their possible affinities with Eurasian suids much less so. Metridiochoerus is either assumed to have descended from a ¿hypothetical Sus-like ancestor¿ (e.g. Cooke, 1978; Bishop, 2010), or to have a close relationship to Kolpochoerus or Potamochoerus (e.g. Harris & White, 1979). Shared dental characters allow to trace the origin of Metridiochoerus to certain Eurasian suids. In the literature on African suids, the living Potamochoerus is either traced back to P. afarensis (e.g. Harris & White, 1979; Bishop, 2010), or that species is placed in Kolpochoerus, while Potamochoerus is assumed to have a ¿hypothetical Sus-like ancestor¿ (e.g. Cooke, 1978). As a result the first appearance of the genus varies widely from the early Late Pliocene (Harris & White, 1979; Harris & Liu, 2007; Bishop, 2010) to Middle Pleistocene (Cooke, 1985) or Late Pleistocene (White, 1996). Stehlin (1899-1900) may have been the first to place fossil species from Europe and Asia in the genus Potamochoerus. Pilgrim (1926) included some of these species in the new, supposedly ancestral genus, Propotamochoerus, named several new species in that genus and two in Potamochoerus on the basis of Indian material. Colbert (1935) traced the living Potamochoerus back to one of these two species. Hooijer (1954) believed Celebochoerus from Sulawesi to be closely related to Potamochoerus. The European latest Miocene to Early Pliocene Propotamochoerus provincialis, is occasionally placed in Potamochoerus (Stehlin, 1899-1900; Guérin, 1996). Still other Chinese (e.g. Lee, 1963; Chang, 1974; Han, 1987), Indian (Verma et al., 1981) and European species (Arribas & Garrido, 2008) have been placed in Potamochoerus. Some consider the temporal range of Potamochoerus in Asia to be from the Middle Miocene to Late Pleistocene (Harris & Liu, 2007). The affinities of these taxa will be discussed.
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