conodont

conodont
[ˈkəʊnədɒnt]
noun
  1. (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
  2. 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
  1. mid 19th cent.: from modern Latin Conodonta (plural), from Greek kōnos 'cone' + odous, odont- 'tooth'
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