广西东南部钦州地区早石炭世放射虫化石

广西钦州地区的板城石夹水库首次发现早石炭世杜内期和维宪期放射虫化石,计10属14种(亚种)和5未定种,其中有1新属(Guangxitrisphaera)和2新种(G.wanyaoensis和Pylentonemabanchensensis),它们分属于Albaillella paradoxa组合带和A.cartalla组合带。这些化石可以同西欧和北美两个同名化石组合带对比。

EARLY CARBONIFEROUS RADIOLARIANS FROM QINZHOU, SOUTHEASTERN GUANGXI

The fossil radiolarians described in this paper were collected from the cherts at WanyaoVillage(Field No. Wan A)and the Shixia Reservoir (Field Nos. Xia--h and Xia--b; see Fig. 1)southeastern Guangxi. The Radiolaria--bearing strata are composed of yellow to yellowishbrown, medium-bedded mudstone and grey to greyish green,thin to medium--bedded cherts,with a thickness of 2000m,previously considered as Devonian or Carboniferous. The radiolarians from the chert formations mentioned above are listed as follows; Xia b:Albaillella indensis Won Xia h:Albaillella indensis Won A. paradoxa Deflandre A. sp. A Entactinia vulgaris vulgaris Won Archocyrtium diductum Deflandre A. lagabriellei Gourmelon Pylentonema banchengensis Wang sp. nov. P. racheboeufi Gourmelon P. sp. B P. sp. CWan A:Entactinosphaera palimbola Foreman Entactinia vulgaris vulgaris Won E. variospina (Won) Belowea variablis (Ormiston et Lane) Guangxitrisphaera wanyaoensis Wang gen. et sp. nov. Albaillella sp. B ?. sp. C Latentifistula cf. impella (Ormiston et Lane) L. cf. turgida (Ormiston et Lane) Tetragregnon sycamorensis Ormiston et Lane Tormentum sp. The Shixia Reservoir Radiolarian Fauna is characterized by the families Albaillellidaeand Archocyrtiidae,equivalent to the Tournasian Albaillella paradoxa Assemblage Zone ofFrance,Germany,Turkey and North America,but the Wanyao radiolarians are predominatedby such genera as Latentifistula, Guangxitrisphaera, Tetragreegnon, and Albaillella, whichprobably correspond to the Albaillella cartalla Assemblage Zone of North America and WestEurope.