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3238155
5 Mass Extinctions
Description
9-Li, Ma'am Tenchavez
No tags specified
biology
extinction
pisay
biology
1st quarter
high school
Mind Map by
oceayen
, updated more than 1 year ago
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Created by
oceayen
about 9 years ago
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Resource summary
5 Mass Extinctions
Ordovician
25% to 50% became extinct
sea life (i.e. trilobites, brachiopods, graptolites) drastically reduced in number
Devonian
75% became extinct
water bed dried up
sea bed became devoid of oxygen
Permian
96% became extinct
"The Great Dying"
Triassic
marine reptiles, some large amphibians, many reef-building creatures, large numbers of cephalopod mollusks died
plants were not so badly affected
Cretaceous
K/T extinction
death of dinosaurs, many flowering plants, and last of pterosaurs
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