 Other authors treat the former as more distantly related and sometimes include the Dacrytheriidae in the Anoplotheriidae as a third subfamily, Dacrytheriinae.On the other hand, the Robiaciinae can be considered the most basal branch of the Anoplotheriinae, resulting in no subfamilies at all being recognized, or be elevated to a fourth (or third) family in the Anoplotherioidea.The subfamilies and genera included here are