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- W2381494361 abstract "The fossil plants studied in this paper were collected from the Carboniferous and Permian strata in the northern part of the Helan Mountains. The flora is composed of 104 species in 39 genera, which may be divided into five plant assemblages in ascending order as follows:(1)the early Late Carboniferous Bothrodendron circulare-Mesocalamites cistiformi assemblage;(2)the middle Late Carboniferous Lepidodendron subrhombicum-Conchophyllum richthofeni assemblage;(3)the late Late Carboniferous Lepidodendron szeianum-Neuropteris ovata assemblage;(4)the early Early Permian Lepidodendron posthumii-Callipteridium koraiense assemblage;(5)the late Early Permian Caulopteris wudaensis-Paratingia datongensis assemblage. Their typical formations are the Hongtuwa Formation, the Yanghukou Formation, the Lower Taiyuan Formation, the Middle and Upper Taiyuan Formation, and the Shanxi Formation respectively. The geological ages of the five plant assemblages may approximately correspond to the Namurian B-C, Westphalian, Stephanian, Asselian, Sakmarian and Aritinskian. The Carboniferous and Permian flora contains typical Cathaysian elements and it is a typical Cathaysia flora. The flora can be compared with contemporaneous floras in the Cathaysian province. In addition, the evolution of the flora is discussed in this paper." @default.
- W2381494361 created "2016-06-24" @default.
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- W2381494361 date "2003-01-01" @default.
- W2381494361 modified "2023-09-25" @default.
- W2381494361 title "CARBONIFEROUS AND PERMIAN FLORA IN THE NORTHERN PART OF THE HELAN MOUNTAINS" @default.
- W2381494361 hasPublicationYear "2003" @default.
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