prehistoric [Adjective] + stone [Noun]

Strength Strength Dispersion
A:
4
CHISQ:
12.14
AWT:
21,152,154
TTEST:
1.59
G2:
9.62
FAWT:
2.57
MI:
2.27
LOGLOG:
4.54
JD:
0.39
MI3:
6.27
DICE:
0.07
RANGE: