Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
543-490 m.y.a. increase in temp, sea, oxygen |
Cambrian |
|
|
490-443 m.y.a. decrease in temp, sea, oxygen
*mass extinction |
Ordovician |
|
|
443-417 m.y.a. increase in temp, sea, oxygen then decrease in sea & oxygen |
Silurian |
|
|
417-354 m.y.a. decrease in oxygen increase in temp & sea then decrease in temp & sea
*mass extinction |
Devonian |
|
|
354-297 m.y.a. decrease in temp & sea increase in oxygen |
Carboniferous |
|
|
297-251 m.y.a. decrease in temp & sea increase in oxygen then decrease in oxygen
*mass extinction **highest oxygen levels ever |
Permian |
|
|
251-206 m.y.a. increase in temp, sea, oxygen then decrease in sea & oxygen |
Triassic |
|
|
206-144 m.y.a. increase in temp & sea decrease in oxygen |
Jurassic |
|
|
145-65 m.y.a. increase in temp, sea, oxygen then decrease in sea
*mass extinction **oxygen reaches modern levels |
Cretaceous |
|
|
65-1.8 m.y.a. growing and retreating glaciers |
Tertiary |
|
|
1.8 m.y.a.-present growing and retreating glaciers |
Quaternary |
