As this example illustrates ... Darwin's view of the evolutionary tree is beautifully expressed in the following quote: The affinities of all the beings of the same class have sometimes been ...

The three trees in Figure 6, for example, have the same topology and thus the same evolutionary implications. In each case, the first divergence event separated the lineage that gave rise to tip A ...

Ammonite fossils, an example is shown here ... organisms have changed as life developed on Earth. In this evolutionary tree, species A and B share a recent common ancestor. Species A is therefore ...

Ammonite fossils, an example is shown here ... organisms have changed as life developed on Earth. In this evolutionary tree, species A and B share a recent common ancestor. Species A is therefore ...