Sentence Examples

  • Solenopsidae.-Shell equivalve, greatly elongated, umbones very far forward.
  • Hinge pliodont, that is to say, it has numerous teeth on either side of the umbones and the teeth are perpendicular to the edge.
  • Philobryidae.-Shell thin, very inequilateral, anterior part atrophied, umbones projecting.
  • Trigonia; shell sub-triangular, umbones directed backwards.
  • Prasinidae.-Shell inequilateral, with anterior umbones and prominent anterior auricula; cardinal border arched..

How would you define umbones? Add your definition here.

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