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- For instance, there are unique groups of plants and animals on northern and southern continents that can be traced to the split of Pangaea into two supercontinents (Laurasia in the north, Gondwana in the south). Marsupial mammals on Australia likely evolved from a common ancestor. Emu have adapted to there Environment around the world like the oshdrich in America and the emu in Australia and the kiwi in new Zealand. Big Flightless Birds Come From High-Flying Ancestors We're sure glad ostriches and emus don't fly. But DNA evidence now suggests their small ancestors flew to each continent, where they evolved independently into giants with stubby wings.
- Comparative anatomy is the study of the similarities and differences in the structures of different species. Similar body parts may be homologous structures or analogous structures. Both provide evidence for evolution. A common example of comparative anatomy is the similar bone structures in forelimbs of cats, whales, bats, and humans. All of these appendages consist of the same basic parts; yet, they serve completely different functions.
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