Australian fossil shells were formed millions of years ago
when the center of Australia was under water. In the outback desert, now you
can find sea shells that are dug up by opal miners.
Most are fossilized and only few are opalized with some
colour. Also, marine animals such as belemnite are found in South Australia, it
is a sea animal from the cretaceous period. Belemnites were a squid like
They are also found in Queensland but are not opalized.
In Lightning Ridge, you can find fossil of fresh water clams
as this area was fresh water rivers and swamps.
A large range all
types shells can be found in Australia including sea urchins to worm fossils
and small marine animal fossils.