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。
Besides, the colour alteration of conodonts and its significance in exploring oil and gas is als...
本文还讨论了该区牙形刺颜色变化对油气勘探的意义。
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。
Conodonts first emerged around 500 million years ago and died out just as dinosaurs were beginning to take shape.
牙形刺最早出现于大约5亿年前，就在恐龙开始登上历史舞台时灭绝了。
Conodonts; Late Carboniferous; Benxi Formation; southeastern Liaoning; Stratigraphical divisions and correlation.
牙形刺；晚石炭世；本溪组；辽宁东南部；地层划分与对比。
The animals, called conodonts, possessed rows of sharp, interlocking cone-shaped teeth that raked prey into their mouths.
这种叫作牙形刺的动物长有数排相互咬合的圆锥状利牙，像钉耙一样将猎物“耙”入口中。
The Nashui section of Luodian, Guizhou is a good section for the study of the Pennsylvanian conodonts and the stage boundaries.
贵州罗甸纳水剖面是研究宾夕法尼亚亚系牙形刺和各阶界线的良好剖面。
One reason why conodonts have remained so enigmatic, despite the fossil finds, is that their soft bodies didn't leave much to make fossils.
牙形刺之所以仍然如此神秘，一个原因就是除了发现过它们的牙齿化石以外，它们柔软的躯体无法变成化石保存到今天。
Late Tournaisian conodonts from the Jiehejie Formation in the Qinling Mountains, situated between the North China Platform and South China Platform are first described and illustrated in this paper.
首次描述并图示了位于华北地台和华南地台之间的秦岭山脉中的早石炭世杜内阶上部的牙形刺。
Late Tournaisian conodonts from the Jiehejie Formation in the Qinling Mountains, situated between the North China Platform and South China Platform are first described and illustrated in this paper.
首次描述并图示了位于华北地台和华南地台之间的秦岭山脉中的早石炭世杜内阶上部的牙形刺。
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