graptolite
/'^ræptәlait/
📖 中文释义
- n. [古生]笔石( 古元脊椎动物, 现存化石 )
🔗 释义中的汉语词
🧩 词形变化
复数 graptolites
📘 English Definition（英文释义）
- n. 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.