Placental mammals in Australia evolving into varieties of placental mammals that are similar to corresponding marsupials
Darwin's finches on the Galapagos Islands
Australian marsupials
Fish in the Great Barrier Reef
Solution
The example of convergent evolution is that of placental mammals in Australia evolving into varieties of placental mammals that are similar to corresponding marsupials, such as the placental wolf and the Tasmanian wolf:marsupial.