National Animal Rights March Parliament Square London August 6 2022
Channel: David Holt
Date: 06/08/2022

58% of Nature has Gone 
Earth is Degrading fast 
This is the 11th Mass Extinction 

1. Great Oxidation Event (2.45 BYA) 
Marine cyanobacteria infuse the atmosphere and sea surface with oxygen, 
slaughtering anaerobes who couldn’t tolerate O2.

2. Snowball Earth (~800–630 MYA) thick ice covers most of the planet in 3 episodes, 
dropping both diversity and biomass.

3. End-Ediacaran Extinction (539 MYA) early worms ravage marine microbial populations.

4. End-Botomian Mass Extinction (517 MYA): a severe extinction pulse in the Early Cambrian epoch.

5. Cambrian Extinction Event (488 MYA) many weird wonders lose their lease on life, 
including the first flush of trilobites, in an extinction event called the Dead Interval.

6. Late Ordovician Mass Extinction (LOME) (455 MYA): glaciations again take their toll with wholesale extinction in the tropics.

7. Late Devonian Extinction Kellwasser Event (374–364 MYA): a series of extinction pulses involving invasive species and volcanoes.

8.  End-Permian Extinction The Great Dying (252 MYA): Earth’s most severe mass extinction event.

9. The Triassic–Jurassic (Tr-J) Extinction Event (201 MYA): life on land and in the oceans takes a major hit from volcanic climate change.

10. The Cretaceous–Paleogene (K–Pg) Extinction Event (66 MYA): the finale for large dinosaurs.