First Pleistocene jumping mouse (Zapus, Zapodinae, Rodentia) from Utah

被引：0
|
作者：
Ruez, DR [1 ]
Bell, CJ [1 ]
机构：
[1] Univ Texas, Dept Geol Sci, Jackson Sch Geosci, Austin, TX 78712 USA
来源：
WESTERN NORTH AMERICAN NATURALIST | 2004年 / 64卷 / 04期
关键词：
Little Dell Dam; Utah; Pleistocene; Zapus; Zapodinae;
D O I：
暂无
中图分类号：
X176 [生物多样性保护];
学科分类号：
090705 ;
摘要：
TWO of the Little Dell Dam fossil localities produced the 1st Pleistocene records of the jumping mouse Zapus from Utah. We describe these teeth in detail and compare their morphology with both extinct and extant jumping mouse taxa. Although it is not possible to confidently assign these specimens to a particular species, the Little Dell Dam fossils are clearly distinct from the only living jumping mouse (Zapus princeps) currently known from Utah. The paracone is attached to the rest of the occlusal surface of the upper, 1st ancl 2nd molars in modern Z. princeps from Utah; the paracone is isolated in the molars from Little Dell Dam. The fossils from Little Dell Dam are the 1st reported records of Pleistocene Zapus west of the Rocky Mountains.
引用
收藏
页码：439 / 444
页数：6
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