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HOME ⊙ fossil ⊙ Paleontological fossils "written" on rocks
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Paleontological fossils "written" on rocks

来源: | 作者:佚名 | 发布时间 :2023-12-14 | 191 次浏览: | Share:

Graptolites are such "fossils written on the rock ", and there are more kinds of graptolites, which have been found and named more than 3000 kinds, and more than 2200 species have been found in China, belonging to 4 orders,31 families,202 genera.

Not only can graptolites be used for fine stratigraphic correlation as important paleontologists in the Ordovician and Silurian systems (the establishment of several global standard stratigraphical profiles - commonly known as "golden nails" - depends on graptolites), but recent studies have shown that graptolite shales (mainly black rock series preserved in large quantities by graptolites) are obvious indicators for the exploration of some shale gas. Therefore, the study of graptolites will be further studied with the development of science and technology.


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