Floian（Lower Ordovician）Graptolites from the Yiyang Area, Hunan Provinceoft-com:office:office" />
- 责任者：Li Lixia (Department of Earth Science ; Nanjing University ; Nanjing 210093 ; China) ; Feng Hongzhen
- 刊名：Acta Palaeontologica Sinica
- 出版年：2010
- 卷期：49(2)
- 关键词：均分笔石科 ; Dichograptidae ; 对笔石科 ; Didymograptidae ; 四笔石科 ; Tetragraptidae ; 湖南 ; Hunan Province
- 页码：p.174-195
- 图表：4 illus., 3 plates, a table, 74 refs.
- 分类号：1103
- issnNo：ISSN0001-6616
- isbnNo：CN32-1188/Q
30 species of Floian（Early Ordovician）graptolites are reported from the Nanba section in the Yiyang area, Hunan Province, and 16 of them are described in detail due to their biostratigraphical importance. The described species are listed as follows: Acrograptus affinis, A. gracilis, Baltograptus geometricus, B. vacillans, Clonograptus rigidus, Corymbograptus deflexus, Cymatograptus undulatus, Didymograptellus bifidus, “Didymograptus” demissus, “D.” rigoletto, Expansograptus holmi, E. constrictus, Pendeograptus fruticosus, P.pendens, Tetragraptus akzharensis, and T.approximatus. The Floian graptolite fauna in the Nanba section, only with a few anisograptids remaining from the Tremadocian, is dominated by dichograptids.