The most common and most likely answer to this crossword clue is the 5 plus 3 letter word STONE AGE
S
T
O
N
E
A
G
E
More clues leading to the result STONE AGE
- Period of history, period enthralling one
- Very old, wise person circling pitch
- Very old joke packs theatre
- ‘Time that was gone’, as the middle dropped out
- Learned about colour many years ago
- Wise to suppress mood when primitive men seen
- Uncivilised Amir evicted from raunchy menage-a-trois
- Prehistory Stage 1 rewritten
- Learned about mood in prehistoric time
- Eton Mess with a herb crust 25
Buddy explains!
The straight part
We know that "division of prehistory" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case division of prehistory = stone age.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.