Geologic Timeline Project

History of Life on Earth INQUIRY Activity

Directions : Work in groups of two.  Make sure both members names are on the very end of your timeline.

Each group should draw a time line.  One inch will equal 100,000,000 years ( write small.) On the time line, label the major eras (Precambrian, Paleozoic, Mesozoic, Cenozoic), and periods of the Paleozoic and Mesozoic.  Also on the timeline, identify the 5 major mass extinctions that have happened in earth’s history.  This information is in Ch 15 in your text or on-line.  You will have to tape 5 sheets of paper together (lengthwise).

On the time line, write (indicate) when the following organisms first appeared:

Flowering plants

Conifers

Algae

Mosses

Ferns

Fungi

Bacteria

Sponges

Jellyfish

Protozoa

Flatworms

Roundworms

Segmented worms

Mollusks

Echinoderms

Jawless fish

Cartilaginous fish

Bony fish

Amphibians

Reptiles

Birds

Mammals

Dinosaurs

Insects

Spiders

Crustacea

Millipedes

Human