Sentence Examples

  • Philobryidae.-Shell thin, very inequilateral, anterior part atrophied, umbones projecting.
  • Cyrtodontidae.-Extinct; shell equivalve and inequilateral, short, convex.
  • Lyrodesmidae.-Extinct; shell inequilateral, posterior side shorter; hinge short, teeth in form of a fan.
  • Mytilidae.-Shell inequilateral, anterior end short; hinge without teeth; ligament external.
  • Pernidae.-Shell very inequilateral; ligament subdivided; mantle open throughout; anterior adductor absent.