Snowball

[quote="snowball"]Hi everyone. My extent of zoology is one college course, many years ago. Not sure if it is just my end but I can't seem to bring the image up to full size? it is only 150x112 anyway, it is really strange ...

See entire post

... event in Earth's history. Additionally the free oxygen combined with atmospheric methane, triggering the Huronian glaciation, possibly the longest snowball Earth episode ever.

See entire post

... formation of East Greenland, Siberia and others. Can you be a little more precise? To what Cambrian strata are you referring.? (3) following the Snowball Period reradiation, some rapid changes are to be expected. The snowball earth hypothesis is considered to have come before the Cambrian period ...

See entire post

As more fossil beds are found, the Cambrian Explosion is looking more artifactual. The changes were pretty quick, but following the Snowball Period reradiation, some rapid changes are to be expected. Darwin was a uniformitarian, but that hasn't been the prevailing attitude for half a century.

See entire post

... and the ones that exist may be from very different environments well-separated on the planet, especially with the "recent" end of the Snowball Period. The Cambrian Explosion is at least partially an artifact of that problem. I don't see why the appearance of vertebrates during that ...

See entire post