MASSEXTINCTION
ARCHAEOPTERYX
STROMATOLITES
TRILOBITES
ATMOSPHERE
AMPHIBIANS
DINOSAURS
BACTERIA
MAMMALS
FERNS
C
A
S
T
R
O
M
A
T
O
L
I
T
E
S
I
U
I
L
U
M
A
M
M
A
L
S
P
Q
Y
E
F
M
O
I
U
J
E
L
J
W
G
U
H
E
E
M
D
N
A
I
R
M
A
V
N
O
E
I
J
H
B
E
K
I
I
S
S
A
I
Q
I
G
E
X
J
U
T
V
E
U
N
U
S
N
E
T
G
K
W
R
Y
C
U
U
W
W
A
O
B
E
W
L
O
S
G
U
E
R
X
L
G
I
O
I
S
G
X
H
C
A
A
T
I
H
E
T
H
X
I
Q
R
A
N
T
A
O
H
O
R
B
P
T
D
C
I
P
C
E
U
A
I
N
I
U
Q
I
C
S
P
N
T
L
K
I
T
R
Y
N
O
Q
U
P
L
U
O
O
F
I
W
I
C
C
S
Z
C
T
A
Q
P
O
I
M
E
E
U
O
Z
Z
A
F
X
T
T
M
E
K
B
R
T
A
R
A
D
L
N
B
S
R
I
E
I
Z
U
I
C
A
H
N
P
J
U
U
A
I
W
O
I
N
A
Q
T
M
Y
C
S
O
U
S
I
K
N
J
N
E
O
E
O
E
A
V
R
A
V
B
T
D
A
X
U
G
U
A
S
H
S
L
V
A
M
P
H
I
B
I
A
N
S
A
