Welcome to Visited Vertebrata Palasiatica, Today is Share:

Vertebrata Palasiatica ›› 1995, Vol. 33 ›› Issue (02): 85-98.

    Next Articles

THE GEOLOGICAL SIGNIFICANCE OF SINACANTHUS FROM TARIM, CHINA

Liu Shifan   

  • Online:1995-06-15 Published:1995-06-15

塔里木西北的中华棘鱼化石及地质意义

刘时藩   

Abstract: Sinacanthus wuchangensis was erected by P 'an Kiang (Jiang) in 1957 on some fin spines from Wuchang, Hubei Province. Seven years later, more than 10 fin spines of Sinacanthus wuchangensis from Devonian System (?) of Wuchang were studied again by the same author, and the characters of Sinacanthus were analyzed thoroughly. Subsequently, similar fin spine fossils were discovered one after another in the middle-lower reachs of the Yangtze River (Yangtze region), such as Sinacanthus of Jiujiang, Jiangxi Province (Li et al., 1966); Sinacanthus fancunensis from Tangjiawu Formation of Ningguo, S. Anhui (Liu, 1973); Sinacanthus wuchangensis, Smacanthus triangulatus, Sinacanthus fancunensis from Guodingshan Formation of Hanyang (Pan et al., 1975) and Sinacanthus cf. wuchangensis from Fentou Formation of Puxi, Chongyang, Hubei Province (Li, 1978; 1980); Sinacanthus sp. from Fentou Formation of Chaoxian, Anhui Province (Wang et al., 1980); Acanthodii fron Rongxi Formation of Dayong, NW Hunan (Zeng, 1988) etc.. The Sinacanthus fossil localities were restricted to the Yangtze region before the discovery of the Tarim fossils. They used to be referred to as Devonian or Early Devonian in age, but later discoveries have demostrated that the age of Sinacanthus-bearing beds should be Silurian (Li, 1980). In 1988, five Sinacanthus fossil beds were found in the Tataertag Formation of Kalping, NW Tarim and the age of the Tataertag Formation was considered MiddleLate Silurian (Table 2). In the summer of 1992, Wang Junqing, Zhu Min and the author of this paper found a lot of fossil fin spines in both Kalping and Bachu, NW Tarim. Some of them were preseved together with agnathans Hanyangaspis etc..Most of these fin spine specimens were collected from Imogantau Formation of Bachu.

摘要: 文章记述了塔里木巴楚县北闸衣木干他乌组中的棘鱼鳍刺化石,并简要回顾了产自长江中、下游地区(扬子区)中华棘鱼群化石的研究结果。经比较后认为,两地所产的棘鱼鳍刺化石总休上是相似的,其中锅顶山组或坟头组中和衣木干他乌组中所产的更为接近。一般来说,衣木干他乌组的层位也应和锅顶山组或坟头组的大致相当,同为中志留统。衣木干他乌组时代的更正,又使得塔里木和扬子地区中古生代地层的框架能很好地进行对比,进而证实,塔里木和扬子地区在志留纪时曾是相互邻近或彼此相连。