G. yamana is assigned to this genus because of the absence of an ink sac and crop, the presence of cartilaginous warts covering the body cavity, uniserial suckers on the arms, and a reduced radula.

G. verruscosa is also found in the North Atlantic Ocean instead of the South.

[1] This species is known from the southwest Atlantic Ocean off the coasts of Uruguay, Argentina, and southern Brazil.

G. yamana is the fifth species of Graneledone found in the southern oceans.

[2] This genus has been found in the deep waters near hydrothermal vents.