笔石 meaning in English

(古无脊椎动物) graptolite
◇笔石纲 graptolithida; 笔石体 rhabdosome; 笔石相 graptolithic facies

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。
During the early silurian , the corals of the erlangping trough and the graptolites of the xichuan shelf belonged to the south china province
在早志留世，二郎坪海槽的珊瑚与浙川陆棚的笔石属华南生物省。
The pteridophyta fauna includes 3 genara and 6 species ( including 5 unnamed species ) , the graptolite fauna includes 3 genara and 4 species , the conodont fauna includes 10 genara and 17 species and the radiolarian fauna includes 12 genara and 28 species
鉴定后发现，植物共计3属6种(其中包括5个未定种) ，笔石计有3属4种，牙形石计有10属17种，放射虫计有12属28种。
The author ultimately achieves the following goals : 1 . studied the nongba section , and correlated many sedimentary information and pteridophyta , graptolite , conodont and radiolaria etc . palaeontology fossils . study on palaeontology paleontology fossils of nongba section is carried out
笔者最终取得的研究成果如下： 1 、对弄巴剖面进行了详细的剖面测制工作，收集了大量沉积学方面的资料及一批植物、笔石、牙形石、和放射虫等古生物化石。