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graptolites

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n.【动】笔石
网络笔石类

复数：graptolites

graptolites

graptolites

英-汉英-英网络释义

graptolites

笔石

化石以三叶虫、笔石（Graptolites）、腕足类、棘皮动物中的海林檎类（Cystoides）、软体动物中的鹦鹉螺类（Nautilites）最 …

笔石类

生物学专业英语词汇(G) ... graph 图解 graptolites 笔石类 grass 草 ...

1

The graptolites are generally preserved as films in mudstones or muddy siltstones at the depths of thousands meters beneath the surface.

这些笔石标本一般保存成薄膜状于数千米之下的泥岩或泥质粉砂岩之中。

2

Material illustrating detailed structure of graptolites has been etched from limestone by means of hydrofluoric acid .

表明笔石详细构造的物质是利用氢氟酸从石灰岩中侵蚀出来。

3

Lower Silurian graptolites from southern Anhui

安徽南部下志留统笔石

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