摘要
本文在回顾了二叠纪造礁生物化石研究概况后,讨论了这一时期各类造礁生物的基本特征。并对我国南方二叠纪生物礁及礁生物群进行对比分析。认为造礁生物主要为钙质海绵、钙藻类、水螅类及苔藓虫,这一组合面貌同世界其它地区二叠纪礁生物群面貌特征相似。根据我国南方不同地区礁生物群组合特点,划分了利川礁生物群、北碚礁生物群、广南礁生物群和隆林礁生物群。并对造礁生物占生态进行了讨论。提出今后应从几方面深入这一领域的研究:1.生物与礁的关系,即造礁生物或群落如何控制礁的生成和发展;2.群落演替及群落对比;3.疑难门类造礁生物化石(如硬骨海绵等)的系统研究;4.数理统计方法在造礁生物古生态分析中的应用。
Permian reefs are widely distributed in Guizhou, Yunnan, Hubei, Sichuan,Guangxi and Hunan Provinces, southern China. In the last ten years, an abundance of reef-building fossils have been collected from these localities. There, frame-building organisms are sphinctozoans, inozoans, tabu lozoans, bryozoans, hydrozoans and a few colonial corals. Binding organisms are dominantly Archaeolothoporella, Tubiphytes, blue-green algae, with subordinate bryozoans and some calcisponges. Accessory organisms include brachiopods, bivalves, gastropods, echinoderms, fusulinids and foraminifers.Four biotas can be differentiated on the basis of symbiotic relationships of the main reef-building organisms. 1) Lichuan reef biota, frame-building organisms are calcisponges, and forty-five species of 23 genera of Sphinctozoa and Inozoa are described. The biota is found in Late Permian reefs of Lichuan, Hubei Province, and in other reefs of Sichuan and Guizhou Provinces, is represented by sphinctozoan sponges Amblysiphonella-olycystocoelia. 2) Beipei reef biota: sixteen species of 11 genera of Sphinctozoa and Inozoa, short and small in form, are described only in Later Permian reefs of Beipei, Sichuan Province; the biota is represented by Glomocystospongia-Amblysiphonella. 3) Guangnan reef biota: it is represented by Intrasporeocoelia-Rhabdactinia. The association consists of twenty-two speoies of 15 genera of Sphinctozoa, Inozoa and sclerosponges. At present it is found in Middle Permian reefs of Guangnan, Yunnan Province. 4) Longlin reef biota: reef-builders include Sphinctozoa, Inozoa, Tabulozoa and some sclerosponges. Forty-six species of 26 genera, only limited to Sphinctozoa and Inozoa, are determined and described. The biota is found in Middle to Late Permian reefs of Longlin, Guangxi Province, and is represented by Intrasporecccelia-Tebagathalamia-Peronidella. The binding organisms play an important role in developing reefs. They are so abundant that they can be found in almost all reef biotas mentioned above.After giving a general review of the study of Permian reef-building organisms, the paper presents some constructive suggestions on the reef fossil researches ahead. Some notes on analysis of fossil communities are also given in this paper, and many problems about the ecological features of calcisponges are discussed.
出处
《地质论评》
CAS
CSCD
北大核心
1991年第2期133-143,共11页
Geological Review
基金
国家自然科学基金委员会科学基金
