conodont
/ˈkəʊnədɒnt/noun
(亦作conodont animal)
1- 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。
1.1
- Class Conodonta, phylum Chordata: numerous families.牙形动物纲, 脊索动物门：众多科。
1.2
- （亦作conodont element）a tooth of this animal, often found as a fossil牙形刺, 牙形石。
词源
mid 19th cent.: from modern Latin Conodonta (plural), from Greek kōnos 'cone' + odous, odont- 'tooth'.