Eric Walker added Kangaroos to Macropodiformes, and added Macropodiformes to Diprotodontia

Eric Walker added Petaurus to Petauridae, and added Petauridae to Diprotodontia

Eric Walker added Diprotodontia to Marsupialia, and added Marsupialia to Mammalia

Eric Walker added Macropodiformes and Petauridae to Diprotodontia, and added Diprotodontia to Marsupialia