Geologic Time Scale Lab Template Page 2
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38. Using the Geologic Time Scale chart:
a. Mark with a vertical line each era and period in Phanerozoic Time. Write the name of each
era below the middle line with a red marker. Write each period at the bottom of the paper with
a purple marker.
Major geologic time division
Time Period
Measurement on tape
PreCambrian Time
4,500 – 543 m.y.a.
Phanerozoic Time- Paleozoic Era
543 – 248 m.y.a.
Paleozoic Era – Cambrian Period
543 – 490 m.y.a.
Paleozoic Era- Ordovician Period
490 – 443 m.y.a.
Paleozoic Era- Silurian Period
443 - 417 m.y.a.
Paleozoic Era- Devonian Period
417 – 354 m.y.a.
Paleozoic Era- Carboniferous
354 – 290 m.y.a.
Period
Paleozoic Era- Permian Period
290 – 248 m.y.a.
Phanerozoic Time- Mesozoic Era
248 to 65 m.y.a.
Mesozoic Era- Triassic Period
248 – 206 m.y.a.
Mesozoic Era- Jurassic Period
206 – 144 m.y.a.
Mesozoic Era- Cretaceous Period
144 - 65 m.y.a.
Phanerozoic Time -Cenozoic Era
65 m.y.a. - today
Cenozoic Era - Tertiary Period
65 – 1.8 m.y.a.
Cenozoic Era - Quaternary Period
1.8 m.y.a. - today
b. Fill in the blank area with Major events from your time. Write important information to
know, draw and find pictures to email me and I will print them out in color for you to add to
your time.
Events you must include:
i. Humans appear
ii. First land plants
iii. First fish
iv. First flowering plants
v. First dinosaurs, mammals
vi. First birds
vii. First multicellular organisms
viii. The first prokaryote
ix. First reptiles
x. Extinction that wiped out approximately 95% of all species
xi. Primates appear
xii. First eukaryote
xiii. First amphibians
xiv. First insects
xv. Oxygen starts to accumulate in atmosphere
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