The fact that there was never a land bridge between Australia and mainland Asia is evidenced by the fact that the animal species in the two areas are very different. Asian placental mammals and Australian marsupial mammals have not been in contact in the last several million years.
Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*
*Response times vary by subject and question complexity. Median response time is 34 minutes and may be longer for new subjects.