元谋小河村古猿上颌骨化石的初步研究

PRELIMINARY STUDY OF THE UPPER JAW FOSSILS OF HOMINOIDS FROM XIAOHE VILLAGE IN YUANMOU COUNTY

１９８７年初和１９８９年１１月，分别在云南省元谋县小河村的蝴蝶梁子和盖排梁子，发现了两件古猿上颌骨化石（ＹＭ１２和ＹＭ１５０），原研究者将前者订名为“腊玛古猿属蝴蝶种（Ｒａｍａｐｉｔｈｅｃｕｓｈｕｄｉｅｎｅｓｉｓ）。”作者研究了这两件标本，从形态上看，两者十分相似，从尺寸上可分为大、小两个类型，它们可能是同一种的雌雄个体，：即前者大，为雄性；后者小，为雌性。它们与禄丰古猿（Ｌｕｆｅｎｇｐｉｔｈｅｃｕｓｌｕｆｅｎｇｅｎｓｉｓ）的形态非常相似，它们应归为禄丰古猿属。但这两件小河的标本，又有它们的固有特点，所以暂归之于Ｌｕｆｅｎｇｐｉｔｈｅｃｕｓｓｐ．。

Two fragments of upper jaw bone fossils of hominoids (YM 12 and YM 150) collected fromthe localities of Hudie Liangzi and Gal Pal Liangzi near Xiaohe Village, Yuanmou County,Yunnan Province, in 1987 and 1989 were restudied. They are similar to the Lufengpithecus verymuch, and may belong to the same genus. But the two specimens possess some spedal features,they are attributed id Lufengpithecus sp.