Wu, Q.; Lin, C. -s.; Wu, Y. -c.; Zhang, L. x. (1986). 福建省龙岩经畲晚石炭世及早二叠世早期的(竹蜓)类动物群及其地层意义 - Late Carboniferous and Earliest Permian fusulinid faunas from Jingshe, Longyan district of Fujian and their stratigraphic significance. 微体古生物学报 - Acta Micropalaeontologica Sinica. 3(1): 17-35.

336580

Wu, Q.; Lin, C. -s.; Wu, Y. -c.; Zhang, L. x.

1986

3(1): 17-35

Publication

Available for editors   [request]

This paper deals with the Late Carboniferous and Earliest Permian fusu- linid faunas of Jingshe in southwestern Fujian, which comprise 65 species belonging to 14 genera, with 37 species (including 9 new forms)described and illustrated in detail.The Late Carboniferous and Earliest Permian in Fujian is composed of marine limestone and siliceous limestone. Traditionally, the boundary between Late Carboniferous and Earliest Permian was considered as lying between the Misellina claudiae Zone of the Chihsia Limestone and the Sphaeroschwagerina moelleri Zone of the Chuanshan Formation in conformity.The Chuanshan Formation in the Jingshe 148.3m in thickness can be divided into two fusulinid zones in descending order as follows:2. Sphaeroschwagerina moelleri-Eoparafusulina pararegularis Assemblage Zone1. Triticites chinensis ZoneThe Triticites chinensis Zone, the lower part of the Chuashan Formation, consists of light grey massive limestones, and is dominantly characterized by Quasifusulina, Rugosofusulina and Triticites and secondarily by Eoparafusulina, and Schubertella, with such major elements as Triticites variabilis, T. parvulus, T. pseudopusillus, T. chinensis, T. of. bellus, Quasifusulina paracompacta, Q. longissima, Q. tenuissima, Rugosofusulina prisca, R. alpina, Schwagerina jingsheensis sp. nov. and Schubertella kingi. The lower part of the Chuanshan Formation is easily distinguished from the underlying Jingshe Formation which yields Pseudostaffella sphaeroidea var. cuboides, Fusulina quasicylindrica and Fusulina fortissima, and it can be roughly correlated with the Triticites simplex Subzone of Yishan in Guangxi, and with the Triticites chui-Triticites chinensis Subzone of Qinglong in Guizhou.The upper part of the Chuanshan Formation consists of light grey massive limestone intercalated with thin-bedded siliceous limestones, and globular structures containing very rich forms with globular, subfusiform and thickened tests such as Sphaeroschwagerina, Pseudoschwagerina, Paraschwagina, Zellia and numerous Eoparafusulina, which can be referred to the Sphaeroschwagerina moelleri-Eoparafusulina pararegularis Assemblage Zone, representing the upper fusulinid horizon of the Chuanshan Formation in Fujian. This zone includes some important representative elements, such as Sphaeroschwagerina moelleri, S. sphaerica, Zellia colaniae, Pseudochwagerina beedei, Eoparafusulina pararegularis, E. rotunda, E. parciseptata, E. pseudosimplex, E. of. ovata, E. bocki, E. cylindrica fujianensis subsp, nov., E. pusilla, E. pulcherima sp. nov. , E. thompsoni, Schwagerina vulgaris var. watanabei and Pseudofusulina subashiensis. Triticites in this zone tends to decline in diversity and abundance, but Triticites parvulus, T. parvus, T. simplex, T. shikhanensis compactus, etc. still can be found. The lower limit of this zone coincides with the occurrence of the numerous Eoparafusulina, and the upper limit of this zone is identical with the extinction of Sphaeroschwagerina.The Earliest Permian Chihsia Formation in Fujian consists of dark-grey massive limestones and dark-grey siliceous limestones, more than 84.6m in thickness, and can be easily-distinguished from the Late Carboniferous formations lithologically. From the viewpoint of faunas, the Schwagerina cushmani Zone should be first established below the Misellina claudine Zone in Fujian. Originally, the lower limit of the Early Permian was considered as coincident with the occurrence of Misellina claudiae. In fact, there is still a thick sequence with a mixed fauna between the Sphaeroschwagerina moelleri and Misellina claudiae Zones in Fujian, which has been neglected by stratigraphers for a long time. Practically, this stratigraphical unit which is equivalent to the Swine Limestone of the Nanjing Hills has a rather wide distribution in southern China. The Schwagerina cushmani Assemblage in southwestern Fujian contains 30 species (including 3 new forms) belonging to 5 genera, among which 14 species are identical with those from Member I of the Chihsia Formation in Hunan, namely, Schwagerina cushm

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