Figure 2 in Systematic taxonomy of the Trilobatus sacculifer plexus and descendant Globigerinoidesella fistulosa (planktonic foraminifera)

Figure 2. Hypothetical visualization of morphology in a single dimension. Trait morphology is normally distributed, whereby the mean morphology (solid vertical arrow) should form the type specimen. Morphospecies with high intraspecific variation may be represented by the dot-dashed distribution curve. Conversely, morphospecies with moderate and low intraspecific variation are represented by the dashed and dotted distribution curves, respectively. Finer taxonomic splitting results in more morphospecies with a narrow (dotted line) distribution curve. SD: standard deviation.