A Walk Through Geological Time

A Walk Through Geological TimeDirections:1. Complete your time table by visiting each of the 8 stations.2.You will have 3 minutes at each station to examine the items and information sheets.3.Draw pictures of key organisms (2-3) for each era.4.Use the highlighters/ pencils to color code your time table.

Your 3 minute timing will be done using the “Era” Song!

http://www.youtube.com/watch?v=SY3MZ_wNFW8&feature=related

When the song ends each time, you will have to

move on to the next station,

so use your time well!

PrecambianBiological:1. Cyanobacteria2. Ediacaran organisms3. bacteria-like organisms

Geological:

Oxygen and ozone in atmosphere

Precambian2. Ediacaran organisms

Paleozoic

7. Trilobites , brachiopods, marine invertebrates abundant

Trilobytes

Brachiopods

Invertebrates

Paleozoic

4. Fish dominant

6. First fish appear

Paleozoic5. First land plants & insects appear

Paleozoic

1. Reptiles evolve

2. Amphibians dominant

3. Amphibians appear

Early reptiles

Amphibians

PaleozoicGeological Events:Coal swamps form

Shallow seas begin to withdrawAppalachian Mountains

form

Mesozoic4. Mammals first appear

Mesozoic

1. Angiosperms appear

2. Birds first appear

3. Dinosaurs are

dominant

MesozoicGeological Events:Rocky Mountains

Atlantic & Pacific Oceans formingPangea breaks up

Cenozoic1. Mammals are abundant

2. Angiosperms dominant

CenozoicGeological Events: Alps & Himalayas begin to rise

Answer KeyDates Biological Events Geological Events

66 mya – presentCenozoic

Era1. Mammals are abundant

2. Angiosperms dominant

Alps & Himalayas begin to rise

Dinosaur Great Extinction

250 mya – 66 myaMesozoic

Era

1. Angiosperms appear

2. Birds first appear

3. Dinosaurs are dominant

4. Mammals first appear

Rocky MountainsAtlantic & Pacific Oceans forming

Pangea breaks up

Mass Extinction

540 mya – 250 myaPaleozoic

Era

1. Reptiles evolve

2. Amphibians dominant

3. Amphibians appear

4. Fish dominant

5. First land plants & insects appear

6. First fish appear7. Trilobites , brachiopods, marine invertebrates abundant

Coal swamps formShallow seas begin to withdraw

Appalachian Mountainsform

4600 mya – 250 myaPrecambrian

Era

1. Cyanobacteria2. Ediacaran organisms3. bacteria-like organisms

Oxygen and ozone in atmosphere