graptolite

英语音标

英语翻译

n.笔石纲

英语例句

These provide base for the correct measurement and valuing of graptolite reflectivity. 从而为笔石反射率的正确测定和取值奠定了基础。

The Ordovician graptolite bearing beds have been found from the core of Tadong 2 borehole in the northeastern Tarim Basin, Xinjiang. 塔里木盆地东部塔东2井岩心中新发现了一些奥陶系笔石化石,这些笔石标本呈炭质薄膜状,保存在该井4550。

These 22 points are divided into two groups, which,represent respectiyely, two graptolite types in the early ordovician, namely, the South China type and the Central China type. 在平面图中,22个点可划分为2个点群,分别代表中国早奥陶世的两大笔石动物群,即华南型笔石动物群和华中型笔石动物群。

We suggest that the strata are turbidite sequences that are deposisted on the passive continental margin.The strata containing plant, conodont and graptolite belongs to Early-Late Devonian. 该组中采获了低等蕨类植物、牙形石和笔石等化石，证实其时代属于早泥盆世-晚泥盆世。

The Longmaxi formation of Lower Silurian is ten metres in thickness,containing three graptolite zones:Glyptograptus persculptus,Parakidograptus acuminatus and Orthograptus vosiculosus. 下志留统龙马溪组厚10m