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Vertebrata Palasiatica ›› 2004, Vol. 43 ›› Issue (01): 67-76.

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MURIDS FROM THE LATE MIOCENE BAHE FORMATION, LANTIAN, SHAANXI

QIU ZhuDing, ZHENG ShaoHua, ZHANG ZhaoQun   

  • Online:2004-03-15 Published:2004-03-15

陕西蓝田晚中新世灞河组鼠科化石

邱铸鼎, 郑绍华, 张兆群   

Abstract: Two forms of Muridae, Progonomys sinensis sp. nov. and Muridae gen. et sp. indet. from the late Miocene Bahe Formation at Lantian, Shaanxi Province are described. The new species, occurring in lower horizons of the formation , demonstrates intermediate characters between P. cathalai and P. woelferi in dimension and morphology. The new murid argues for an age of early late Miocene for the lower portions of the Bahe Formation , corresponding to early Baodean of Chinese Land Mammal Age, which can be correlated with late Vallesian or MN10 of Europe. Consequently, the new species is important because it repre2 sents diversity in the species of the genus Progonomys and the oldest murid known in China. The indeterminate species was probably closely allied to the new species.

摘要: 详细描述了陕西蓝田晚中新世灞河组发现的两种鼠科化石:中华原裔鼠Progonomys sinensis sp. nov. 和Muridae gen. et sp. indet. 。新种的特征是:个体通常比Progonomys cathalai Schaub, 1938 大;下臼齿的唇侧齿带和附属尖很弱;三分之二的m1 具有一很小的中间前边尖(tma) ;M1 的t1 和t3 偶见后刺,在个别的m1 中有一短的中间脊;臼齿的尺寸落入P. woelferi的变异范围,但t6~t9 间的连接没有该种那样常见,而t