Term
|
Definition
from planetesimals
4567 Ma |
|
|
Term
|
Definition
- 4567 Ma - 3800 Ma
- formation of moon
- formation of earth's atmosphere |
|
|
Term
|
Definition
- 3800 Ma - 2500 Ma
- Oldest known rocks
- much of earth's surface is volcanic rock, forming unstable regions of erupting magma
- oldest known fossils
- sizable continental areas begin to form |
|
|
Term
|
Definition
- 2500 Ma - 542 Ma
- extensive shallow seas on margin of continents and deposition of banded-ion formation
- significant levels of oxygen in atmosphere
- first eukaryotic cells
- beginning of supercontinent Rodinia
- Rodinia breaks up, Pannotia forms
- Ice age, MASS EXTINCTION!! |
|
|
Term
|
Definition
- 542 Ma - 488 Ma
- first shellfish and corals, lots o skeleton |
|
|
Term
|
Definition
- 488 Ma - 444 Ma
- First jawless fish
- first land plants
- MASS EXTINCTION |
|
|
Term
|
Definition
- 444 Ma - 416 Ma
- first vascular plants
- taconic orogeny |
|
|
Term
|
Definition
- 416 Ma - 359 Ma
- first insects
- first terapods
- first seed-bearing plants
- acadian/caledonian orogeny |
|
|
Term
|
Definition
- 359 Ma - 299 Ma
- first reptiles
- extensive coal deposits form
- first mammal-like reptiles |
|
|
Term
|
Definition
- 299 Ma - 251 Ma
- pangea forms
- mass extinction (siberian basalt eruption) |
|
|
Term
|
Definition
- 251 Ma - 200 Ma
- first dinosaurs
- first mammals |
|
|
Term
|
Definition
- 200 - 145 Ma
- big ol' dinosaurs and RATS
- first birds |
|
|
Term
|
Definition
- 145-65.6 Ma
- flowering plants
- t-rex
- CHICXULUB, EVERYBODY DIES
- south atlantic opens |
|
|
Term
| order of divisons/subdivisions |
|
Definition
- precambrian/cambrian time
- eons
- eras
- periods
- epochs |
|
|
Term
| precambrian time subdivided |
|
Definition
- hadean eon
- archean eon
- proterozoic eon |
|
|
Term
|
Definition
|
|
Term
| phanerozoic eon subdivided |
|
Definition
- paleozoic era
- mesozoic era
- cenozoic era |
|
|
Term
|
Definition
- cambrian period
- ordovician period
- silurian period
- devonion period
- carboniferous period (missipian/pennsylvanian)
- permian period |
|
|
Term
|
Definition
- triassic period
- jurassic period
- cretaceous period |
|
|
Term
|
Definition
- terciary period
- quarternary period |
|
|
