题 名：Cenozoic charophyte assemblages of the zaysan basin, kazakstan(哈萨克斯坦斋桑盆地新生代轮藻植物组合)
关键词：charophyte assemblages;Eocene;Oligocene;biostratigraphy;Zaysan Basin;Kazakstan
作 者：Ayzhan KZhamangara;Spencer Glucas (Spencer Glucas)
年卷期：2003年20卷2期
页 码：172-182
文 摘：外文摘要
The Zaysan Basin in eastern Kazakstan has been the site of a freshwater lake since Late Cretaceous time. Lake and lake-margin sediments in the Zaysan Basin yield extensive collections of charophyte gyrogonites from strata of Eocene, O