Periodicity of mass extinctions

[Gelatinous squid]

I was wondering: is there a consensus in the palaeontological community regarding  David Raup and Jack Sepkoski's claims to a periodicity of mass extinctions? Even if Nemesis has been pretty much refuted, I haven't found any definitive disproof of the supposed signal in the noise. Some say absolutely not, some say certainly. I don't know who to believe. And I'm making a video on the topic, so I kinda need to draw a conclusion. Any info would be helpful. Thanks! 

[ynot]

There is a definite cycle of mass extinctions in the fossil records. What is the cause? I do not believe that anyone knows, We will just have to wait for the next occurance to see.

Tony

[siteseer]

4 hours ago, Gelatinous squid said:

I was wondering: is there a consensus in the palaeontological community regarding  David Raup and Jack Sepkoski's claims to a periodicity of mass extinctions? Even if Nemesis has been pretty much refuted, I haven't found any definitive disproof of the supposed signal in the noise. Some say absolutely not, some say certainly. I don't know who to believe. And I'm making a video on the topic, so I kinda need to draw a conclusion. Any info would be helpful. Thanks! 

 

 

We've talked about this before and maybe even before that.

 

 

The problem, as I noted in the thread, is that there really isn't an event that qualifies as a mass extinction during the whole Cenozoic Era.

 

I suggest you read this book:

 

https://www.amazon.com/Great-Extinctions-What-Causes-Shape/dp/1770853278

 

Great book.

 

 

 

[doushantuo]

melottbambach1310.4712.pdf

 

wabupaleobiology1.pdf

wangevepaleobiol6056%2E1.pdf