A New &i&Stegolophodon&/i& (Proboscidea, Mammalia) from the Irrawaddy Formation of Myanmar

摘要

The new fossil teeth of Stegolophodon (Proboscidea, Mammalia) were discovered from the terrestrial sediments of the Irrawaddy Formation, in Kyauksaungsan and Tebingan areas, Magway Region, central Myanmar. A new Stegolophodon species is established in this paper. Stegolophodon iravaticus shares the characters of the advanced Stegolophodon and the primitive Stegodon . The M_(3) of S. iravaticus is related to that of the molar of Sand Pit in Tha Chang, Thailand and that of from Dhedari, Pakistan which is included in the Stegolophodon group 6 of Saegusa et al. (2005).