胞石鉴定新技术——一种使用生物显微镜鉴定胞石标本的新方法

NEW TECHNIQUE OF CHITINOZOAN IDENTIFICATION ——A new method of using microscope for chitinozoan identification

生物显微镜、实体显微镜和扫描电子显微镜是研究胞石化石的主要工具 ,三者各有优势和不足之处。通过摸索和对比 ,在普通生物显微镜上加载一个落入光系统 ,或者使用带有落入光系统的生物显微镜 ,可以清楚地观察和分辨标本表面的特征和纹饰类型 ,充分发挥生物显微镜的优势 ,做到准确、快速、低成本地鉴定胞石化石。

The present paper concerns chiefly with the method of chitinozoan identification. The conventional apparatuses for chitinozoan identification are stereoscopic microscope, light microscope and scanning electron microscope. Stereomicroscope can be used to isolate them and separate chitinozoans specimens roughly into different taxa. As the magnification and resolution capacity are low, it is not suitable for stereomicroscope to be used for precise identification. Before the SEM was widely employed, chitinozoans were mainly identified by light microscope or infrared microscope. But the resolution of these microscopes is not very well. Many characters of the vesicle surface can hardly be observed, especially under transmitted light microscope. Now, the SEM becomes a main way of studying this fossil group. However, the SEM is expensive and time-consuming. It is impossible to study every specimen using the SEM. We find that a microscope equipped with transmitted and incident light systems (i.e. Fig.1), can be used to observe the specimen vesicle and distinguish the ornamentation very clearly.