middlemioceneochotonidsochotonidaelagomorphafromdamiaopliopithecidlocalityneimongol

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	middlemioceneochotonidsochotonidaelagomorphafromdamiaopliopithecidlocalityneimongol
	Zhang Zhaoqun1 ; Kaakinen Anu 2; Wang Lihua 1; Liu Liping1 ; Liu Yan 1; Fortelius Mikael 2
	2012
发表期刊	古脊椎动物学报
ISSN	1000-3118
卷号	50 期号:3 页码:281
摘要	Although highly diversified in their early history, only one genus in Ochotonidae, Ochotona, survives to the present. Ochotona is generally accepted to have originated from the Middle Miocene Bellatona. During the 2006-2010 field seasons, we found Miocene localities at Damiao, Siziwang Qi, Nei Mongol, which produced rich materials of ochotonids. Of these localities, DM01(pliopithecid locality), dated by the paleomagnetic method and faunal comparison as late Middle Miocene(~ 12 Ma), yielded rich materials of the Bellatona-Bellatonoides-Ochotona group, and a large-sized relic form assigned to Desmatolagus moergenensis. The p3 morphology of the Bellatona-Bellatonoides-Ochotona complex conserves a similar tooth outline, but with distinct successive structures. The Bellatona form has two labial folds and no lingual fold on p3. The p3 of Bellatonoides form has one shallow anterolingual fold that is widely separated from the anterolabial fold. The p3 of Ochotona has a deep anterolingual fold that is closely connected with the anterolabial fold by a central bridge. The posterior process on M2 also shows progressive enlargement from Bellatona to Ochotona. Other cheek teeth of this complex are not distinguishable by either morphology or size. With only teeth found, we tentatively propose successive linear evolutionary relationships of the Bellatona-Bellatonoides-Ochotona complex, and Ochotona may have directly originated from Bellatonoides during the late Middle Miocene. The geological age of this fossil locality is consistent with the divergence time of Ochotona as estimated by molecular dating methods.
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/10733
专题	中国科学院古脊椎动物与古人类研究所
作者单位	1.中国科学院古脊椎动物与古人类研究所 2.Department of Geosciences and Geography,University of Helsinki
第一作者单位	中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	Zhang Zhaoqun,Kaakinen Anu,Wang Lihua,et al. middlemioceneochotonidsochotonidaelagomorphafromdamiaopliopithecidlocalityneimongol[J]. 古脊椎动物学报,2012,50(3):281.
APA	Zhang Zhaoqun,Kaakinen Anu,Wang Lihua,Liu Liping,Liu Yan,&Fortelius Mikael.(2012).middlemioceneochotonidsochotonidaelagomorphafromdamiaopliopithecidlocalityneimongol.古脊椎动物学报,50(3),281.
MLA	Zhang Zhaoqun,et al."middlemioceneochotonidsochotonidaelagomorphafromdamiaopliopithecidlocalityneimongol".古脊椎动物学报 50.3(2012):281.