Zhou, T. M. (1992). Some species of Pseudodoliolina from the Maokou stage of Early Permian at Xianbo, Longlin, Guangxi. Geology of Guangxi. 5(2): 11-22 Sum 24.

344942

Zhou, T. M.

1992

5(2): 11-22 Sum 24

Publication

Specimens of the fusulinids dealt with in this paper were collected in the autumn of 1985 from the Maokou Stage of Middle Permian at the Xiangbo Section which is located on the southwest flank of the Anran Anticline about 30 km west of the town of Longlin, Guangxi. The Permian sequences are continuous and extensively exposed. The upper and middle parts of the Maokou Stage are composed of reef carbonates or light gray massive framestones in organic reef facies, whereas the lower part is composed of bioclastic grainstone, sparite and wachestone. The biomicrite consists of foraminifera, calcareous algae, fusulinids, bryozoans, rugose corals, echinodermatas and belongs to biological shoal facies. The fusulinaceans dealt with in this paper comprise twelve species of Pseudodoliolina genus,of which two are new. The new species occur in the Cancellina zone in the lower part of the Maokou Stage, where fusulinaceans are very abundant in the Canceooina zone and Pseudodoliolina consists mostly of individuals . This paper has a brief discussion on the evolution of the genus according to the stratigraphic sequences.

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