Oldest Part of the Brain, the Basal Ganglia
This page is the CodyCross answer for the clue below from House of Horrors, Group 1110, Puzzle 3 (Cawing Crow).
Question is: Oldest Part of the Brain, the Basal Ganglia
and the answer is: REPTILIAN
Word Meaning:
REPTILIAN — (zoology) Of or relating to the members of the class Reptilia (reptiles).
Definitions from Wiktionary.