Transcript
Earth TimelineEarth Timeline
When did these events occur?1. Find the length of masking tape at your table.2. Write Earth forms on one end of the tape, and
today on the other end. 3. As a group, place the following six events in
the timeline:a. Mammals first appearb. Amphibians first appearc. Fish first appeard. Birds first appeare. Reptiles first appearf. Dinosaurs first appear
What do these organisms have in common?
How old is the Earth?
Earth’s Calendar
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Earth forms from planetary nebula
today
HADEAN EONOf The Underworld
4.6 – 4.0 billion years ago
January 1 – February 17
ARCHEAN EONAncient Beginning
4.0 – 2.5 billion years ago
February 18 – June 16
fossil stromatolites
Banff, Canada
modern stromatolites Shark Bay, Australia
Banded Iron Formations
PROTEROZOIC EONEarly Life 2.5 billion – 542 million years ago
June 17 – November 18
eukaryotic cellprokaryotic cell
PHANEROZOIC EONVisible Life 542 million years ago – today
November 19 – December 31
PHANEROZOIC EON54
2 M
a
toda
y
AMPHIBIANS
370 MaDec 3
Oldest land fossil
440 Ma – Nov 28
MAMMALS
200 MaDec 16
DINOSAURS
231 MaDec 14
BIRDS
145 MaDec 20
REPTILES
310 MaDec 7
FISH
530 MaNov 20
MASS EXTINCTION 1
445 MaNov 27
MASS EXTINCTION 3
252 MaDec 12
MASS EXTINCTION 5
66 MaDec 27
MASS EXTINCTION 2
360 Ma Dec 4
MASS EXTINCTION 4
198 MaDec 17
Mass Extinctions54
2 M
a
toda
y
FISH
AMPHIBIANS
REPTILES
DINOSAURS
MAMMALS
BIRDS
CO2TCO2
TCO2
TCO2
T
CO2T
Change over time
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