Age of the Earth


Just as a lark and as a little exercise in making HTML tables (and to make clear what one error was in that last post), I threw together this table of the geological time scale, taken from Mayr’s What Evolution Is. I come from that generation of biologists where we were required to memorize the timescale to this level of detail; I’m a bit rusty on the dates now (but these are pretty much the same as what I had to learn in the late 1970s), and I was just realizing that we don’t even mention this stuff in introductory biology anymore.

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A testimonial

I occasionally put up some of the wackier/more obnoxious e-mail I get from creationists and other deluded True Believers, but I don’t want to give the wrong impression—I also get lots of friendly and supportive email. I just don’t think any of it is quite as entertaining as the crazy stuff. Anyway, for balance, and because he was nice enough to give permission to post it, here’s a message from the sane side.

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