| Their marsupium is well developed, opens to the rear, and contains only 2 teats. |
| Some marsupials have a pouchlike structure or fold, the marsupium, that shelters the suckling young. |
| These bones however have no connection with the marsupium, being nearly equally developed in both male and female. |
| In some species of marsupials, females develop a pouch or marsupium in which the young are nursed. |
| That there is more than one pouch makes a comparison with the mammary pouch rather than with the marsupium probable. |
| Members of this family have a well developed marsupium that opens anteriorly. |
