摘要
文章简要报道了伊朗卡尚地区库姆组首次发现的沟鞭藻类 ,计 6属 6种。根据沟鞭藻化石组合面貌 ,并结合介形虫和钙质超微化石组合 ,探讨了含沟鞭藻化石的地层时代 ,推测其沉积环境为正常浅海大陆架环境。
The firstly discovered dinoflagellates (including 6 species in 6 genera) from the Qum Formation of the Kashan block in Iran are reported briefly in this paper. They are Homotryblium plectilum Drugg et Loeblich, Thalassiphora pelagica (Eisenack) Eisenack et Gocht, Hystrichokolpoma rigaudiae Deflandre et Cookson, Operculodinium centrocarpum (Deflandre et Cookson) Wall, Spiniferites pseudofurcatus (Klumpp) Sarjeant, Palaeocystodinium golzwense Alberti ect., among which Homotryblium plectilum Drugg et Loeblich is a dominant species and the other species is relatively few. Based on the features of the dinoflagellate assemblage and also the features of the nannofossil and ostracode assemblages, the strata bearing these dinoflagellate fossils are considered to be Eocene or Middle Eocene in age, and the paleoenvironment of that time is inferred to be the shelf of normal shallow sea.
出处
《微体古生物学报》
CSCD
北大核心
2003年第3期266-269,共4页
Acta Micropalaeontologica Sinica
