Morphological Variation of Compositae Pollen from Quaternary Sediments of Eurasia
详细信息
- 责任者：Tang Lingyu (Nanjing Institute of Geology and Palaeontology ; Chinese Academy of Sciences ; Nanjing 210008 ; China) ; Zhang Xiaoping
- 刊名：Acta Palaeontologica Sinica
- 出版年：2012
- 卷期：51(1)
- 关键词：双子叶植物纲 ; Dicotyledoneae
- 页码：p.64-75
- 图表：4 illus., 3 table, 13 refs.
- 分类号：1102
- 出版序号：20130359
- issnNo：ISSN0001-6616
- isbnNo：CN32-1188/Q
摘要
More than 20 kinds of morphological characters of pollen Quaternary age Compositae (Asteraceae) from the different areas of Eurasia were surveyed. Three patterns were recognized:echinate, echinate with columellae, and lophate. Each form could be assigned to tribes or genera of extant Compositae. The origin distribution of the main pollen types shows that the greatest diversity is centered in Eurasia and nothern America, whereas in Asia Compositae are chiefty found in the Himalayas and southwestern China. This pattern is consistent with the previously reported origin of Compsitae, during the Paleocene, having been in moderately arid and warm area ranging from the Mediterranean to northwestern America.