1. Geologic Time Scale

3. Time Nick-name Era Period World LIFE Events Pre-Cambrian From
4.6 Billon YBP
until
570 Million YBP
"Shield" Regions
of the world
are formed
Bacteria
Algae
and
“SIMPLE"
Life forms
Age of Simple LIFE

4. Other Simple life forms

5. Time Nick-name Era Period World LIFE Events Paleo- zoic
From
570 Million
YBP
until
245 million
OLD
Mountains
form.
(Appalachians in
North
America)
Pangaea
forms
near end of
Paleozoic
Trilobites
early fish,
Am-
phibians.
Fern
forests
on land
Age of Fish and Amphibians

8. Time Nick-name Era Period World LIFE Events Pangaea beaks apart at
Age of Reptiles
Meso-
zoic
From
245
Million
YBP
until
66 million
Pangaea
beaks
apart at
start of
Mesozoic.
Appalachians
stop build
up.
Reptiles,
birds and
dinosaurs
newly
appear.
(Most
lifeforms
become
more
diverse …
Trilobites
extinct)

10. Time Nick-name Era Period World LIFE Events From Trees 66 expand,
Ceno-
zoic
From 66
Million
YBP
until
Today
Continents
move
to present
locations.
Rockies
build.
Numerous
Ice-ages
occur.
Trees
expand,
Mammals
expand
humans
appear.
Dinosaurs
are extinct
Age of Mammals

12. We currently live in a time of ICE Ages in the Cenozoic ERA
10,000 years ago ice covered this area

13. We are in a time of high temperature and low ice volume….
that has happened before.

14. When will the ice come back?
Lets hope that it won’t be as fast as ……
The day after tomorrow