Earth & Life (http://www.geofinds.com), 2006-10-1, Vol.1. , No.1: 7-11

 

 
 
 

Specific diversity of organisms in Upper Permian  Changhsingian reefs

 

WU Ya Sheng1, JIANG Hong Xia1, LIAO Tai Ping2, FAN Jia Song1

 

 

1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China

2. Chongqing University of Science and Technology, Chongqing 400042, China

 

 Abstract  Statistic shows that organisms in Changhsingian reefs include 84 species belonging to 35 genera of thalamid sponges, 9 species belonging to 5 genera of inozoans, 6 species belonging to 6 genera of sclerosponges, 4 species belonging to 2 genera of hydrozoans, 77 species belonging to 13 genera of fusulinids, 34 species belonging to 14 genera of foraminifers, 8 species belonging to 8 genera of bryozoans, 1 species belonging to 1 genus of corals, 25 species belonging to 12 genera of brachopods, 1 species belonging 1 genus of microproblematicum, 1 species belonging to 1 genus of gastropods, 6 species belonging to 6 genera of algae, totally 256 species and 104 genera.

 

 

Keywords: Permian-Triassic boundary, end-Permian, sea-level change, erosional surface, Sichuan

 

 

 

 

In Chinese:

长兴期生物礁的物种分异度*

吴亚生1  姜红霞1  廖太平2  范嘉松1

 

 

1. 中国科学院地质与地球物理研究所,北京 100029

2. 重庆科技学院,重庆400042

 

 

摘 要 长兴期生物礁至少产房室海绵35属84种、纤维海绵5属9种、硬海绵6属6种、水螅2属4种、蜓类13属77种、有孔虫14属34种、苔藓虫8属8种、藻类6属6种、珊瑚1属1种、腕足类12属25种、疑源小生物1属1种、腹足类1属1种,总计104属256种。

 

 

关键词 生物礁; 二叠纪; 长兴期; 物种分异度; 集群绝灭

 

引言

查明长兴期的生物多样性是研究二叠纪末集群绝灭的影响和机制的重要内容之一。对于非礁相生物的多样性已有学者作过研究,如Jin et al. (2000)的研究发现华南长兴期海相生物的物种分异度达到333个。但还没有人对长兴期生物礁的物种多样性作过专门研究。本文试图根据国内外已有的资料,对长兴期生物礁的物种多样性作一初步的统计。晚二叠世长兴期生物礁在我国分布很广,已报道自四川、贵州、云南、广西、陕西、湖北、湖南、江西、江苏九省(强子同等,1985;王恕一等,1990;张继庆等,1990;王生海,强子同,1992;朱同兴等,1999;范嘉松和吴亚生, 2002;马永生等,2006)。而在国外只报道自希腊斯基罗斯岛(Skyros)和泰国北部的帕府(Phrae)(范嘉松和吴亚生,2005;Weidlich, 2001)。早在上世纪80年代,我国学者就对湖北利川长兴期生物礁的造礁生物房室海绵开展系统的研究(范嘉松等,1982),描述了大量的房室海绵属种(Fan and Zhang, 1985)。上世纪90年代,范嘉松等(1990,1996)对广西隆林和重庆北培老龙洞长兴期生物礁的生物群进行了系统的描述。徐桂荣等、柳祖汉等分别对长江中游和湖南的长兴期生物礁生物群作了种或属级的鉴定。在国外,Senowbari -Daryan and Ingavat-Helmcke (1994)对泰国帕府的长兴期生物礁的钙质海绵化石做了描述。Flügel and Reinhardt(1990)则对希腊斯基罗斯岛长兴期生物礁的海绵化石进行了鉴定。这些都构成了本文研究的基础。

 
 

* Supported by National Natural Scientific Foundation of China (No. 40472015) and the State Key Laboratory of Modern Paleontology and Stratigraphy (No. 053102), as well as the Key Laboratory for Minerals and Resources, Chinese Academy of Sciences.


 
 

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Content of Vol. 1 No.1