Sentence Examples


  • Natural pearls form inside mollusk shells and are a type of calcium carbonate.
  • Both a cultured pearl and a natural pearl form inside of an oyster as the result of a foreign object, which becomes an irritant, getting lodged inside the body of the mollusk.
  • Notwithstanding the origin of organs, it still for a certain time, by reason of its want of an internal bony skeleton, remains worm and mollusk, and only later enters into the series of the Vertebrata, although traces of the vertebral column even in the earliest periods testify its claim to a place in that series."