New discovery of a large-sized Tetraconodon (Artiodactyla, Suidae) from the lower part of the Irrawaddy Formation, Myanmar

New fossil dentitions of a large-sized Tetraconodon (Mammalia, Artiodactyla, Suidae) were discovered from the lower part of the Irrawaddy Formation, Migyaungye Township, Magway Division, central Myanmar. These specimens are the largest among the Tetraconodon specimens ever found in Myanmar. The molar dimensions of these specimens are similar with those of Tetraconodon magnus but are smaller in the dimensions of last two premolars than T. magnus. Therefore, we assigned these specimens as Tetraconodon sp. cf. T. magnus. The occurrence of a large Tetraconodon confirms an Upper Miocene age for the lower part of the Irrawaddy Formation

Discovery of Propotamochoerus (Artiodactyla, Suidae) from the Neogene of Myanmar

Dento-gnathic specimens of Propotamochoerus (Mammalia, Artiodactyla, Suidae) were discovered from the upper Miocene and lower Pliocene of the Irrawaddy Group, central Myanmar. These specimens were identified as Propotamochoerus hysudricus and Propotamochoerus sp. cf. P. hysudricus. The discovery of P. cf. hysudricus from the lower Pliocene indicates a younger stratigraphic position of this genus. Small size of the premolars in the lower Pliocene specimens possibly suggests an intermediate stage of dental evolution for this form

An Ibis-like Bird (Aves: cf. Threskiornithidae) from the Late Middle Eocene of Myanmar

p. 179-184http://deepblue.lib.umich.edu/bitstream/2027.42/41254/1/Vol 31 No 7 Final.pd

A preliminary report on carnivorous mammals from Pondaung fauna

Some carnivore materials have been discovered from the Pondaung Formatioin in central Myanmar recently. The materials are separable into at least two genera, both of which are hyaenodontid creodonts. One of them is a medium-sized proviverrine. Collected parts include a maxilla, lower molar fragments, and some postcranial fragments. It shows some distinctive dental characters such as small protocone lobe on P_4, anterolingually-placed protocone and posterolingually-placed metacone relative to paracone on M_1 and M_2, and relatively large M_3 with a very reduced metaconid. The other is a much larger form. A maxillary fragment with a M_1 and a mandibular a fragment with P_2 to M_2 have been found for this form. possesses some similarities to Pterodon, but observations on more complete specimens and comparisons with other Pterodon-like hyaenodontids from Asia are necessary to settle a systematic assignment of this form. The two hyaenodontids are the only known mammalian predators from Pondaung fauna (latest Middle Eocene) based on the current knowledge

ポンダウン カセキ ホニュウルイソウ : ミャンマー ニ オケル チュウキ シシンセイ マッキ ノ リクセイ ホニュウルイソウ ノ カイセキ

京都大学0048新制・課程博士博士(理学)甲第8737号理博第2309号新制||理||1207(附属図書館)UT51-2001-F67京都大学大学院理学研究科地球惑星科学専攻(主査)教授 瀬戸口 烈司, 教授 増田 富士雄, 教授 小畑 正明学位規則第4条第1項該当Doctor of ScienceKyoto UniversityDA