graptolites

[US]/'ɡræptəlait/
[UK]/ˈɡræptəˌlaɪt/
Frequency: Very High

Translation

n. 筆石 古無脊椎動物,現存化石。

Example Sentences

From 2003 to 2004, we collected a large amount of Nautiloid and Graptolite fossils in upper metamorphic formations of Mayigangri area and determined the age to be middle and Late Ordovician-Silurian.

在羌塘南部地區發現有可靠化石依據的早古生代地層存在尚屬首次。

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