#genus_Ostrea__Ostrea  type genus of the family Ostreidae
  supertype:  mollusk_genus__molluskgenu  a genus of mollusks
  member of:  family_Ostreidae
  member:  bluepoint__blue_point  small edible oyster typically from the south shore of Long Island
  member:  Japanese_oyster__Ostrea_gigas  large native of Japan introduced along United States Pacific coast; candidate for introduction in Chesapeake Bay

No statement uses or specializes genus_Ostrea; click here to add one.