From sub- + olfactory.
subolfactory (not comparable)
- Underneath the olfactory organ
2015 July 16, “Evidence of Egg Diversity in Squamate Evolution from Cretaceous Anguimorph Embryos”, in PLOS ONE[1], →DOI:The orbit is dorsally bounded by the subolfactory process projecting as a simple ventral downgrowth (Figs 3B and 4B ).