英语词汇“graptolite”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词

graptolite

释义

Noun: graptolite

One of numerous species of slender and delicate fossils, of the genus Graptolites and allied genera, found in the Silurian rocks. They belong to an extinct group (Graptolithina) supposed to be hydroids

Derived forms: graptolites

Encyclopedia: Graptolite

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