I've been reading "When life almost died" by Michael J. Benton. Benton may be an elder statesman of geology, but during his undergrad education, the P-T extinct

I've been reading "When life almost died" by Michael J. Benton. Benton may be an elder statesman of geology, but during his undergrad education, the P-T extinction wasn't considered that drastic. It's not terribly surprising that new ideas in that context are coming about.