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地质古生物学家们习惯于把肉眼可直接鉴别的化石称为大化石;而肉眼不能识别、须借助光学显微镜甚至扫描电镜观察研究的叫小化石,称作“微体化石”。按个体大小和鉴别手段,微体化石又分为两类:一类以毫米为度量单位,借助中、低倍显微镜观察;另一类则是以微米(1/1000毫米)为度量单位,只能在高倍光学显微镜或扫描电镜下观察研究。钙质超微化石就是属于后一类,它是目前科学家所研究的最小的
Geological paleontologists are accustomed to the naked eye can be directly identified as the fossil fossils; and the naked eye can not be identified, with the help of light microscopy or even scanning electron microscopy study called fossils, called “micro-fossils.” According to individual size and identification means, fossils are divided into two categories: one is measured in millimeters, with medium and low magnification microscope; the other is measured in micrometers (1/1000 mm), only Can be observed under high power optical microscope or scanning electron microscope. Calcareous fossils belong to the latter category, which is currently the smallest studied by scientists