2.5 What does relationship mean in systematics? W. Hennig
In this clip, Dr. Patterson introduces his third systematist, a German entomologist named Willi Hennig. This offers a third meaning of ‘relationship’, which is illustrated through a diagram showing Hennig’s conception of the relationship between phylogeny and classification (Figure 6). At the end of the clip, Dr. Patterson refers back to Simpson’s diagrams (Figure 4). This figure is repeated below the clip.