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。
美
['koʊnəˌdɒnt]
