6784209805

GEOLOGfC T5ME BN M1LLION8 OF YEARS

C»L.

Ł u

o. i r-

•y

!oi

ic

r-m

mO

HO

><

>Ȥ

SF

m

to

s|ii

id

Si

I oil

n

i fj>

W j N

<s S

A O

4

(S

I?

|ro Sm

' l«

^m5fś®

łT £;■<

—Sł s* sr

s «> Co

F2 2> ^l-S o I

< fi> N

sr J °

(I i *

2. o I *> e

o

a

N 9

O 3 O ii2 & <9

III,

o 15H»

^ P w » i

r

30 aM Sr

PERIODS ! BIOHERMS MAJOR SKELETAL ELEMENTS