With the provided information about the squirrel glider that it has jaws, limbs, and hair, and it doesn't use placenta for reproduction, we can manage to classify it relatively accurate. Since it is an organisms that has jaws and limbs, it means that it is an animal, thus it is part of the kingdom animalia. These two traits also give us clue that this animal is chordate as it can not have limbs without a back bone. The hair means that the animal is warmblooded, thus it is able to regulate its own temperature. Taking in consideration that it has a jaw, we can exclude the aves (birds), which lives us the only other option, it is a mammal. Since it is a mammal, but it doesn't use placenta for reproduction, than it is part of the marsupial branch of the mammals.