Sun, X. F. (1979). 陕西镇安及甘肃迭部晚二叠世的蜒类 - Upper Permian fusulinids from Zhen'an of Shaanxi and Tewo of Gansu, NW China. 古生物学报 - Acta Palaeontologica Sinica. 18(2): 163-170.

300580

Sun, X. F.

1979

18(2): 163-170

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The Upper Permian fusulinids recorded in this paper were collected from Zhen’an of Shaanxi and Tewo of Gansu,NW.China.They consist of 6 genera and 20 species,including 1 new genus and 5 new species.The diagnosis of the new genus is given as follows:Genus Tewoella gen.nov.Shell small,subcylIndrical;median portion slightly vaulted;poles bluntly rounded. Volution usually 4 in number. Spirotheca exceedingly thin, composed of a tectumand an ill developed diaphanotheca but outermost volution composed of only a singlelayer of tectum. Septa strongly and regularly fluted throughout the length of the shell. Chomata occasionally seen in the first volution.Axial fillings not present.Proloculus minute.and spherical.Type species : Tewoella longa gen.et sp.nov. Remarks: The present new genus resembles Gallowaiinella, but differs from the latter in the smaller size,in having less number of volution and in the absence of axial filling.Occurrence: Upper Permian,in Tewo of Gansu

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