prehistoric [Adjective] + stone [Noun]

Strength Strength Dispersion
A:
8
CHISQ:
153.88
AWT:
15,413,973
TTEST:
2.69
G2:
39.93
FAWT:
3.53
MI:
4.4
LOGLOG:
13.21
JD:
0.61
MI3:
10.4
DICE:
0.14
RANGE: