Image Analysis of Paleogene Calcareous Nannoplankton: Phylogenetic, Biochronologic and Paleoceanographic Applications

一种图像分析系统， 显微镜将用于获得形态测量 古近纪钙质微型浮游生物 这项技术将 开辟了研究微型浮游生物发生的新方法， 迄今为止，这些化石的小尺寸阻碍了这一研究。 的 扫描电子显微镜和图像分析的结合 能够对多个形态参数进行详细测量 在大量的标本上进行，导致数据集 这可以通过系统发育的统计学评估 趋势 微型浮游生物的简单外形 使用简单和明确的参数进行分析。 的 本研究的目的是构建一个形态计量学/系统发育学 该方案在很大程度上独立于以前的分类 并发症 该计划的建设将允许：1） 定量评估的演变模式和克里思 2）古近纪钙质微型浮游生物的相关性， 古海洋环境演化趋势 事件，和3）发展的“形态生物年代学”， 其年龄和误差条可以从形态学中获得 在少量样品上进行测量。

An image analysis system attached to a scanning electron microscope will be utilized to obtain morphometric measurements of selected Paleogene calcareous nannoplankton. This technology will open up a new method in studying nannoplankton phylogeny, which has hitherto been hindered by the small size of these fossils. The combination of scanning electron microscopy and image analysis enable detailed measurements of several morphological parameters to be made on a large number of specimens, leading to data set which can be statistically evaluated in terms of phylogenetic trends. The simple shape of nannoplankton lends itself to shape analysis using uncomplicated and unambiguous parameters. The intention of this study is to construct a morphometric/phylogenetic scheme which is largely independent of previous taxonomic complications. Construction of this scheme will allow: 1) Quantitative assessment of the evolutionary mode and tempo of the calcareous nannoplankton through the Paleogene, 2) Correlation of evolutionary trends with paleoceanographic and paleoenvironmental events, and 3) Development of a "morphometric biochronology" in which an age and error bar can be obtained from morphological measurements on a small number of specimens.