Figure 4 in Homalonotid trilobites from the Silurian and Lower Devonian of south-eastern Australia and New Zealand (Arthropoda: Trilobita: Homalonotidae)

Figure 4. Relationship between trilobite faunal diversity and homalonotid relative abundance. Only homalonotid-bearing faunas represented by more than 10 specimens are plotted. The curve connects plot-points of hypothetical faunas where species are represented in equal proportional relative abundance. Homalonotid faunas cluster in two groups, lower diversity faunas with homalonotids over-represented (above the line) and high diversity faunas with homalonotids generally under-represented (below the line).