Figure 8 in A new ichthyosaur from the Late Jurassic of north- west Patagonia (Argentina) and its significance for the evolution of the narial complex of the ophthalmosaurids

Figure 8. Ancestral state reconstruction of the descending process of the nasal on the dorsal border of the nares using parsimony. Colours on the pie charts represent different character states [black, unknown; white, absent (0); red, spur-like and short (1); yellow, spur-like and long, almost completely dividing the naris (2); purple, stout descending process of the nasal, forming a pillar with the ascending process of the maxilla (3)].