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Mass Extinctions: - Coggle Diagram
Mass Extinctions:
Triassic:
Date of period:
251 to 199 million years ago
Species that got extinct:
Oceanis animals
A few of terrestrial organisms
Reasons for that mass extinction:
Gradual climate changes
An asteroid impact
Volcanic eruptions
Global cooling
Devonian:
Date of period:
416 to 359 million years ago
Species that got extinct:
Fish
70% of marine creatures got extinted
Reasons for that mass extinction:
Global cooling
Reduction in levels of carbon dioxide due to forestation of the continents
An asteroid impact
Ordovician:
Date of period:
440-450 million years ago.
Species that got extinct:
All organisms that live in the sea
Earth fauna disappeared
Reasons for that mass extinction:
Global cooling
Lowering of sea levels
Permian:
Date of period:
299-251 million years ago
Species that got extinct:
90% of fish, amphibians, resptiles, inertebrates, ferns and coniferns died.
7 out of 10 terrestrial species died.
9 out of 10 marine species died.
Reasons for that mass extinction:
Intense volcanism
Poisoning of the seas and the atmosphere.
Collison with one or more asteroids
Cretaceous:
Date of period:
145 to 66 million years ago
Species that got extinct:
Dinosaurs disappear
Reasons for that mass extinction:
A geological layer with a strong presence of iridium
APA:
https://www.google.com/url?sa=i&url=https%3A%2F%2Fline.17qq.com%2Farticles%2Fcgngpkpcv.html&psig=AOvVaw1biXxXBnRaAeRfUT55qwFY&ust=1620229585462000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCJD1l-ivsPACFQAAAAAdAAAAABAY
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.livescience.com%2F43596-devonian-period.html&psig=AOvVaw0j7oN5N7m2IEWozSoDT9GY&ust=1620260182853000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCPDi_NihsfACFQAAAAAdAAAAABAD
https://www.google.com/url?sa=i&url=https%3A%2F%2Fnatmus.humboldt.edu%2Fexhibits%2Flife-through-time%2Fvisual-timeline%2Fpermian-period&psig=AOvVaw0D4oHlJvruMiZJj953Bcpb&ust=1620260300867000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCKiMyZGisfACFQAAAAAdAAAAABAI
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.nationalgeographic.com%2Fscience%2Farticle%2Fcretaceous&psig=AOvVaw29xZtJANudppnVc7mEZSWS&ust=1620263105816000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCMCw3MmssfACFQAAAAAdAAAAABAD
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.sciencephoto.com%2Fmedia%2F168611%2Fview%2Ftriassic-environment&psig=AOvVaw1Vkd_yztbSl54zzojLHA55&ust=1620263001442000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCMjt3eKssfACFQAAAAAdAAAAABAD
