New discovery of fossil cycad-like plants from the Middle Jurassic of West Liaoning, China
New discovery of fossil cycad-like plants from the Middle Jurassic of West Liaoning, China
复制标题
DOI：
10.1360/982005-121
复制
发表时间：
2005-08
影响因子：
--
通讯作者：
Yong-dong Wang;Wu Zhang;Shaolin Zheng;K. Saiki;Nan Li
中科院分区：
文献类型：
--
作者：
Yong-dong Wang;Wu Zhang;Shaolin Zheng;K. Saiki;Nan Li
苏铁目是种子植物最古老的谱系之一，化石记录长达2.5亿年。苏铁被认为起源于晚古生代，并在中生代达到其最大的多样性和分布;然而，它们的演化历史仍然相对知之甚少[1―4]。
The Cycadales are one of the most ancient lineages ofseed plants, with a fossil record that extends over 250 mil-lion years. Cycads are believed to have originated fromthe Late Palaeozoic, and reached its maximum diversityand distribution during the Mesozoic; however, their evo-lutionary history has remained relatively poorly under-stood[1―4].