National Geographic has an article on the proposed changes to the PT Extinction model. It's a bit and better more of the same as yesterday's links. What really caught my eye though was the following map of the terrestrial hypoxic conditions:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRpX-L8FAQS-aYAMFEkdWJH81510532guB3Tn382IokadPcUcvtP-OSEEzQwL6p2bTBFk2BnnTsypt5UkEX78_PCn8kLESY1pjYkNu02BR6IDvY_E2yspAb9Nk-_dWoEjfqIrc/s400/PT-mass-extinction.jpg)
Now compare that with a map of the mountainous terrain of the time.
![](http://jan.ucc.nau.edu/%7Ercb7/260_Permian_2globes.jpg)
Looks like we have a nontrivial correlation to me.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRpX-L8FAQS-aYAMFEkdWJH81510532guB3Tn382IokadPcUcvtP-OSEEzQwL6p2bTBFk2BnnTsypt5UkEX78_PCn8kLESY1pjYkNu02BR6IDvY_E2yspAb9Nk-_dWoEjfqIrc/s400/PT-mass-extinction.jpg)
Now compare that with a map of the mountainous terrain of the time.
![](http://jan.ucc.nau.edu/%7Ercb7/260_Permian_2globes.jpg)
Looks like we have a nontrivial correlation to me.
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