FIGURE 23 in Systematic revision of the trilobite genera Laudonia and Lochmanolenellus (Olenelloidea) from the lower Dyeran (Cambrian Series 2) of western Laurentia

FIGURE 23. Bivariate scatterplots depicting intraspecific variation in various aspects of cephalic morphology of Lochmanolenellus trapezoidalis n. sp. Symbols represent phases of cephalic development. 1, Proportional ellipticity of LA. 2, Proportional length of LA. 3, Proportional length of L2. 4, Proportional length of L3. 5, Proportional length of the glabella. 6, Proportional length of the ocular lobes. 7, Proportional width of the anterior cephalic border (measured anterior to the contact of the ocular lobes with LA). 8, Proportional anterior advancement of the genal spine bases.