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First extinction event caused by anoxia ?

27-06-2018 9:42pm

#1
Capt'n Midnight

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https://phys.org/news/2018-06-mass-extinction-earth-animals.html

Fossil records tell us that the first macroscopic animals appeared on Earth about 575 million years ago. Twenty-four million years later, the diversity of animals began to mysteriously decline, leading to Earth's first know mass extinction event.

...
"This may have been most severe marine anoxic event in the last 550 million years," says Zhang. "Mathematical modeling of our data suggests that almost the entire seafloor was overlain by anoxic waters during the end of the Ediacaran Period."

Tagged:

transition

extinction

cambrian

ediacaran

1