Ichnocoenosis of the Lower Devonian Pingyipu Formation, Longmen Mountain, Sichuan
详细信息
- 责任者：Zhang Lijun (Key Laboratory of Biogenic Traces and Sedimentary Minerals of Henan Province ; Institute of Resources and Environment ; Henan Polytechnic University ; Jiaozuo 454003 ; China) ; Gong Yiming
- 刊名：Acta Palaeontologica Sinica
- 出版年：2013
- 卷期：52(1)
- 关键词：遗迹化石 ; ichnofossils ; 龙门山 ; Longmen Mountains
- 页码：p.86-95
- 图表：illus., 22 refs.
- 分类号：1100
- issnNo：ISSN0001-6616
- isbnNo：CN32-1188/Q
摘要
The littoral-neritic sediments of Lower Devonian Pingyipu Formation in the Ganxi Section are enriched with ichnocoenosis , which consists of at least 11ichnogenera of Arenicolites , Chondrites , Cylindrichnus , Diplocraterion , Palaeophycus , Planolites , Phycodes , Rhizocorallium , Rusophycus , Skolithos , Thalassinoides.The ichnocoenoses represent types of domichnia , fodinichnia and cubichnia.Five ichnocoenoses under different sedimentary environments have been recognized as follows : 1 ) Planolites-Palaeophycus ichnocoenosis mainly consists of fodinichnia from a lower-energy zone of nearshore ; 2 ) Rusophycus-Phycodes ichnocoenosis mainly consists of fodinichnia and cubichnia generated in lower-energy zone of nearshore ; 3 ) Chondrites-Palaeophycus ichnocoenosis mainly consists of domichnia and fodinichnia as indicator of the lower-energy and suboxic conditions of lower nearshore ; 4 ) Skolithos-Cylindrichnus ichnocoenosis is characterized by dwelling burrows from higher-energy foreshore ; 5 ) Skolithos-Diplocrate-rionichnocoenosis , including dwelling and feeding burrows formed in lower-energy zones of upper nearshore enriched with food.
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