onthegeologicalageofmammalianfossilsfromshanmachenggansuprovince

IVPP-IR

	onthegeologicalageofmammalianfossilsfromshanmachenggansuprovince
	Zhang Zhaoqun; Wang Jian
	2016
发表期刊	古脊椎动物学报
ISSN	1000-3118
卷号	54 期号:04 页码:351
摘要	The mammalian fossils (Mimolagus and Anagalopsis) from Shanmacheng in the Jiuxi Basin described by Bohlin in 1951 have long been enigmatic in systematics and controversial in the geological age. New survey in this area suggests the fossils were discovered from the Shanmacheng Member of the Huoshaogou Formation. Comparisons of the Shanmacheng fossils with new specimens of Mimolagus from the Irdin Mahan Formation, and Anagale from the Late Eocene Ulan Gochu Formation, Nei Mongol, suggest an Eocene age for the Shanmacheng fossils. Reinterpretation of the fossil horizon and the paleomagnetic data of Dai et al. (2005) indicates the polarity zones from Huoshaogou section can be correlated to GPTS Chrons 13-18. Therefore, the Huoshaogou Formation may cover late Middle Eocene to Late Eocene and Bohlin' s fossil horizon can roughly be correlated to Chron18n (~39-40 Ma) of late Middle Eocene. The late Middle Eocene age of Mimolagus rodens narrows the time gap with its close relative Gomphos that have been recorded from Early to Middle Eocene. The archaic group Anagalidae may have become extinct before Oligocene.
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/12558
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	Zhang Zhaoqun,Wang Jian. onthegeologicalageofmammalianfossilsfromshanmachenggansuprovince[J]. 古脊椎动物学报,2016,54(04):351.
APA	Zhang Zhaoqun,&Wang Jian.(2016).onthegeologicalageofmammalianfossilsfromshanmachenggansuprovince.古脊椎动物学报,54(04),351.
MLA	Zhang Zhaoqun,et al."onthegeologicalageofmammalianfossilsfromshanmachenggansuprovince".古脊椎动物学报 54.04(2016):351.