Proeggysodon gen. nov., a primitive Eocene eggysodontine (Mammalia, Perissodactyla) from Erden Obo, Siziwangqi, Nei Mongol, China

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	Proeggysodon gen. nov., a primitive Eocene eggysodontine (Mammalia, Perissodactyla) from Erden Obo, Siziwangqi, Nei Mongol, China
其他题名	内蒙古四子王旗额尔登敖包晚始新世紧齿犀类一新属
	Bai Bin; Wang Yuanqing
	2012
发表期刊	古脊椎动物学报
ISSN	1000-3118
卷号	50 期号:3 页码:204
摘要	Previously, rhinocerotoid eggysodontines have been confined to Oligocene deposits from Europe and Asia. Here we report a new primitive Late Eocene eggysodontine, Proeggysodon qiui gen. et sp. nov., from Erden Obo, Siziwangqi, Nei Mongol, China. Proeggysodon differs from other eggysodontines in being smaller; in having two pairs of well-developed, spatulate lower incisors, non-molarized lower premolars, a more lingually aligned cristid obliqua of p4, and an angled junction between the cristid obliqua and the hypolophid of each lower molar; and in lacking buccal cingulids on the lower cheek teeth. Furthermore, we propose that eggysodontines and forstercooperes are closely related, mainly because they share the following features: large and erect canine, relatively short diastema between canine and cheek teeth, and dorsoventrally deep and anteroposteriorly abbreviated symphysis associated with nearly vertically implanted incisors. The new specimen narrows the time gap between the Early to Middle Eocene forstercooperes and the Oligocene eggysodontines. The discovery of Proeggysodon in Asia also suggests that eggysodontines dispersed from this continent into Europe after the“Grande Coupure”.
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/11125
专题	中国科学院古脊椎动物与古人类研究所
作者单位	中国科学院古脊椎动物与古人类研究所
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	Bai Bin,Wang Yuanqing. Proeggysodon gen. nov., a primitive Eocene eggysodontine (Mammalia, Perissodactyla) from Erden Obo, Siziwangqi, Nei Mongol, China[J]. 古脊椎动物学报,2012,50(3):204.
APA	Bai Bin,&Wang Yuanqing.(2012).Proeggysodon gen. nov., a primitive Eocene eggysodontine (Mammalia, Perissodactyla) from Erden Obo, Siziwangqi, Nei Mongol, China.古脊椎动物学报,50(3),204.
MLA	Bai Bin,et al."Proeggysodon gen. nov., a primitive Eocene eggysodontine (Mammalia, Perissodactyla) from Erden Obo, Siziwangqi, Nei Mongol, China".古脊椎动物学报 50.3(2012):204.

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