Actvity 4: Add the following informaton to this fgure:
1) Extnnton Events (mark with an arrow on the nurve)
2) Some brief text next to eanh arrow desnribing extnnton severity and possible triggers
3) Mark on the Cambrian / Paleozoin / Mesozoin-Cenozoin faunas
You nan use this image as your base base or redraw.
End Ord:
Major
Uplift of Appalachian
Mountains
Cambrian
Fauna
End Dev
Intermediate
Evolution of plants
and release of
nutrients into oceans
Paleozoic
Fauna
End Cret
Intermediate
End Perm
Volcanic activity or
Major
Mantle plume impact from space
leading to intense
volcanism
Mesozoic
Cenozoic
Fauna
End Triass
Intermediate
Possibly increased
volcanic activity
due to formation of
Atlantic