(亦作 conodont animal)a fossil marine animal of the Cambrian to Triassic periods, having a long worm-like body, numerous small teeth, and a pair of eyes. It is now believed to be the earliest vertebrate 牙形动物
Class Conodonta, phylum Chordata: numerous families 牙形动物纲,脊索动物门: 众多科 ■(亦作 conodont element)a tooth of this animal, often found as a fossil 牙形刺,牙形石
语源
mid 19th cent.: from modern Latin Conodonta (plural), from Greek kōnos 'cone' + odous, odont- 'tooth'