Palaeozoic Era Flashcards
Everything
1
Q
What happened in the palaeozoic era
A
Cambrian explosion
This was a sudden increase in the variety of
invertebrate animals
It was the largest diversification of life forms
There were ecological periods
2
Q
What happened early in the era
A
Furst fish appeared
Green land plants and coral reefs appeared
Ammonities(indicater species) dominated the seas
3
Q
What happened in the middle of the era
A
Diversification of fish
Land invertebrate appeared
Diversification of plants
First amphibians and insects appeared
4
Q
What happened toward end of era
A
Large mass extinction
90% of all species were wiped out
