·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
N any of various small Palaeozoic toothlike fossils derived from an extinct eel-like marine animal 牙形石
The Precordilleran conodonts are mainly related to a calm and warm-water ocean.
牙形刺的分布主要与平静的暖水大洋有关。
Conodonts went extinct at the end of the Triassic Period, about the time dinosaurs were evolving.
牙形刺在三叠纪末期灭绝了,这正是恐龙开始演化的时代。
Conodonts lived in the Cambrian seas, and may have eaten certain types of plankton, but no one knows for sure.
牙形刺生活在寒武纪的海洋中,可能以某种浮游生物为食,不过没人清楚具体情况。
应用推荐