conodont是什么意思
2023-11-27 16:38:16
conodont
n. [古生]牙形刺；牙形石
英英释义
Noun
- the tiny fossil cone-shaped tooth of a primitive vertebrate of order Conodonta
- small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes
例句
用作名词(n.)
- The Silurian strata containing abundant conodont fossils are well developed and comformable with the overlying Devonian strata in the Baizitian region, northern Yanbian, Sichuan.四川省盐边县北部稗子田地区的志留系发育良好，牙形刺化石极为丰富，与上覆泥盆系连续沉积，并呈整合接触。