Glossopteris Leaf Structure and Vegetative Stem Affinities

舌羊齿叶结构和营养茎亲和力

• 批准号: 9006625
• 负责人: Kathleen Pigg
• 金额: $ 8.15万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-10-15 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9006625&HistoricalAwards=false
• 关键词: Glossopteris; Leaf; Structure; Vegetative; Stem

Glossopteris is a fossil plant group distributed widely among the southern continents. Paleobotanists have studied the remains of this plant genus in detail, but have never brought together the disparate observations of leaves, seeds, and wood anatomy. Dr. Kathleen Pigg has located mineralized specimens wherein different parts of individual plants have been preserved in association. Careful study of these fossils may illuminate the anatomy of the Glossopteris plant as a whole. Reconstructing the anatomy of Glossopteris species will have wide impact. In addition to clarifying the confused taxonomy and classification of disassociated plant parts, this research will document the nature of stem-leaf connections, and the vein systems of individual leaves. These anatomical features are critical to our understanding of this important plant group, and will offer a new window into its place in the evolution of gymnosperms and the origin of flowering plants.

舌羊齿是一个分布广泛的化石植物类群 在南部大陆。 古植物学家研究了 这种植物的详细遗骸，但从来没有带来 把对树叶、种子和木材的不同观察结合在一起， 解剖学 凯瑟琳·皮格博士已经找到了 其中保存了植物个体的不同部分 在协会。 对这些化石的仔细研究可能会揭示 舌羊齿植物的整体解剖 重建舌羊齿属物种的解剖结构 影响广泛。 除了澄清混乱的分类和 分离的植物部分的分类，这项研究将 记录了茎叶连接的性质， 个别叶子的系统。 这些解剖特征是 对于我们了解这个重要的植物群至关重要，并且 将为我们提供一个新的窗口， 裸子植物和开花植物的起源。