The Outer Layer of a Hair
This page is the CodyCross answer for the clue below from Prehistory, Group 1259, Puzzle 5 (Archaeotherium).
Question is: The Outer Layer of a Hair
and the answer is: CUTICLE
Word Meaning:
CUTICLE — The outermost layer of the skin of vertebrates; the epidermis.
Definitions from Wiktionary.