Dental morphology and wear pattern of bamboo rats,genus Rhizomys (Rodentia: Spalacidae) |
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Authors: | Raquel Ló pez-Antoñ anzas |
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Affiliation: | Departamento de Paleobiología, Museo Nacional de Ciencias Naturales-CSIC, c/José Gutiérrez Abascal 2, Madrid 28006, Spain |
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Abstract: | Rhizomys, one of the most derived genera within the tribe Rhizomyini (Rhizomyinae, Spalacidae, Rodentia), comprises three species: Rhizomys sinensis Gray, 1831, R. pruinosus Blyth, 1851 and R. sumatrensis ( Raffles, 1821). A detailed description of the morphology and wear pattern of the cheek teeth of this taxon is provided based on the study of 41 skulls. The variability tracked is due primarily to wear, control of which facilitates comparison of different individuals, fossil or not, at different wear stages. For the first lower and upper molars, six stages of wear (0–5) are recognized. The second lower and upper molars show five stages of wear (0–4), whereas the third ones have four (0–3). The dental wear pattern in Rhizomys is comparable to that of the Pliocene Brachyrhizomys shansius Teilhard de Chardin, 1942. |
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Keywords: | AMNH, American Museum of Natural History, New York, USA BMNH, Natural History Museum, London, United Kingdom C.G., Catalogue gé né ral du Laboratoire des Mammifè res et Oiseaux, MNHN, Paris, France GSI, Geological Survey of India, Kolkata, India IVPP, Institute of Vertebrate Paleontology and Paleoanthropology, Beijing, China MNHN, Musé um national d&rsquo Histoire naturelle, Paris, France Y-GSP, Yale-Geological Survey of Pakistan, Quetta, Pakistan ZMB, Zoologische Sammlung, Museum fü r Naturkunde der Humboldt-Universitä t, Berlin, Germany |
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