Confirmation of a Middle Jurassic age for the Eedemt Formation in Dundgobi Province, southeast Mongolia: constraints from the discovery of new spinicaudatans (clam shrimps)
Confirmation of a Middle Jurassic age for the Eedemt Formation in Dundgobi Province, southeast Mongolia: constraints from the discovery of new spinicaudatans (clam shrimps)
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蒙古东南部敦戈壁省Eedemt组中侏罗世年龄的确认:新棘虾(蛤虾)发现的限制
DOI:
10.1080/03115518.2014.870834
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发表时间:
2014-07
期刊:
影响因子:
1.3
通讯作者:
Ichinnorov, Niiden
中科院分区:
文献类型:
--
作者:
Hasegawa, Takashi;Ohta, Tohru;Hasebe, Noriko;Ichinnorov, Niiden
Two spinicaudatan species, Triglypta eedemtensis Li sp. nov. and Dundgobiestheria mandalgobiensis Li gen. et sp. nov., are described on the basis of scanning electron microscopy (SEM) imaging of newly collected specimens from paper-thin laminated black shale of the Eedemt Formation exposed at the Eedemt locality in the Khootiin Khotgor coal mine region of Dundgobi Province in southeast Mongolia. Triglypta eedemtensis is ornamented mainly with puncta and a punctate fine reticulum; radial lirae occur only on two or three growth bands near the venter. The small spinicaudatan Triglypta is a common component of the Middle Jurassic Euestheria ziliujingensis fauna and Sinokontikia fauna, and is a typical taxon in the Middle Jurassic lacustrine sequences of northern Hebei and the Junggar and Turpan basins of the Xinjiang Autonomous District of China; however, it does not occur in stratigraphically higher units elsewhere. Therefore, the age of the Eedemt Formation should be considered Middle Jurassic rather than Early Cretaceous. The Eedemt Formation is much older than the Early Cretaceous Shinekhudag Formation in the Shine Khudag area of southeast Mongolia.
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DOI:
--
发表时间:
2003
期刊:
--
影响因子:
--
作者:
Chang Meemann
通讯作者:
Chang Meemann
影响因子:
2.1
作者:
通讯作者:
--
DOI:
--
发表时间:
1991
期刊:
--
影响因子:
--
作者:
Pj Chen;J. Hudson
通讯作者:
Pj Chen;J. Hudson
影响因子:
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作者:
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通讯作者:
Gang Li;X. Wan;D. Batten;P. Bengtson;Dangpeng Xi;Pujun Wang
DOI:
10.5962/bhl.title.130093
发表时间:
2010-05
期刊:
--
影响因子:
--
作者:
G. Cuvier
通讯作者:
G. Cuvier