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;
7 Cards in this Set
- Front
- Back
|
Phanerozoic Eon |
541Ma - current Age of invertebrates |
|
|
Early paleozoic |
Rifting of Rodinia High temperatures until the ordovician era Cambrian explosion |
|
|
Cambrian Explosion |
Ecosystems becomes complex Hard, protective shells and exoskeletons develop |
|
|
Early Paleozoic life |
Cephalopods (squid) Eurypterids (sea scorpions) Gastropods (snails) Bi-valves (clams) Crinoids (flower-like marine organisms) 1st vertebrates 1st primitive land plants |
|
|
Mid Paleozoic |
(silurian and devonian) Climate warms to greenhouse conditions
Life bounces back
Life evolves onto land
Vascular land plants |
|
|
Late Paleozoic |
Climate cooling
Seas drop Tropical wetlands and giant insects Amphibians diversified Reptiles appear Pangea forms |
|
|
Permian Extinction |
90% of marine species die 70% of land species die |
