palaeocortex
/ˌpalɪəʊˈkɔːtɛks/ /ˌpeɪlɪəʊˈkɔːtɛks/Anatomy and Zoology
noun
The cortex of the palaeopallium; the phylogenetically ancient part of the cerebral cortex that is involved in olfactory function (limited, in higher mammals, to the pyriform lobe).
Origin
Early 20th century. From palaeo- + cortex, after German Palaeocortex.