'Proterozoic aeon' definitions:
Definition of '
Proterozoic aeon
'
From:
WordNet
noun
From 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms [syn:
Proterozoic
,
Proterozoic eon
, Proterozoic aeon]
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
