conodonts

美 [k?n?'d?nts] 　英 [k?n?'d?nts]

• n.【古生物】牙形蟲
• 網(wǎng)絡牙形石；各種各樣的牙形石；牙形刺

詞形變化

復數(shù)：conodonts  

英漢解釋

n.	1. 【古生物】牙形蟲

英英解釋

n.	1. a very small tooth-shaped fossil thought to be the remains of a marine organism.

例句

It might be due to the Halloween weekend, but the above reminds me of the below image. Imagine if Medusa had conodonts instead of snakes.

可能是因為周末是萬圣節(jié)的關系，上面的圖片讓我聯(lián)想到了下面的畫面。想象一下，頭發(fā)不是蛇而是牙形刺的美杜莎。

Conodonts first emerged around 500 million years ago and died out just as dinosaurs were beginning to take shape.

牙形刺最早出現(xiàn)于大約5億年前，就在恐龍開始登上歷史舞臺時滅絕了。

Peavey is going to discuss her work on conodonts November 1 at the annual meeting of the Geological Society of America in Denver.

Peavey正準備于11月1日在丹佛舉行的美國地質協(xié)會年會上討論她的研究成果。

Conodonts went extinct at the end of the Triassic Period, about the time dinosaurs were evolving.

牙形刺在三疊紀末期滅絕了，這正是恐龍開始演化的時代。

The Nashui section of Luodian, Guizhou is a good section for the study of the Pennsylvanian conodonts and the stage boundaries.

貴州羅甸納水剖面是研究賓夕法尼亞亞系牙形刺和各階界線的良好剖面。

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，一個原因就是除了發(fā)現(xiàn)過它們的牙齒化石以外，它們柔軟的軀體無法變成化石保存到今天。

Conodonts lived in the Cambrian seas, and may have eaten certain types of plankton, but no one knows for sure.

牙形刺生活在寒武紀的海洋中，可能以某種浮游生物為食，不過沒人清楚具體情況。

The event took its hardest toll on marine organisms such as shelled brachiopods, eel-like conodonts, and the trilobites.

這個事件使海洋生物付出了最慘重的代價，如帶殼的腕足類，鰻魚類牙形蟲和三葉蟲等就這樣滅絕了。

Ordovician conodonts from Kalpin of Xinjiang and Pingliang of Gansu across the base of Upper Ordovician Series

新疆柯坪和甘肅平涼上奧陶統(tǒng)底部附近的牙形刺

Geochemical characteristics of paleoseawater from the Early Ordovician of Yangtze Craton: Evidence from the trace elements in conodonts

揚子克拉通早奧陶世古海水地球化學特征：來自牙形石微量元素的證據(jù)