Marsupial and placental mammals diverged from a common ancestor more than 100 million years ago, and have evolved independently ever since. The two groups have different modes of reproduction ...

They discovered that the pivotal heat-producing protein called UCP1 became active after the divergence of placental and marsupial mammals. This finding is crucial for understanding the role of ...

No other continent has the egg-laying monotremes and the pouched marsupials living side by side with placental mammals. Understanding how this unique collection of creatures came to be here has ...