To: SunkenCiv
Isn’t the pre-Cambrian extinction, sometimes called ‘iceball earth’, thought to be the worst mass extinction these days.
38 posted on
07/13/2010 5:54:19 PM PDT by
Lucius Cornelius Sulla
(Good night. I expect more respect tomorrow - Danny H (RIP))
To: Lucius Cornelius Sulla
Hmm, I don’t think there was one. So far the pre-Cambrian fossils consist of microfossils. There were impacts though, big ones. The impact rates rose about 400 million years ago, about the same time that impact rates rose on the Moon. I don’t think that’s coincidental. :’)
43 posted on
07/13/2010 6:40:12 PM PDT by
SunkenCiv
("Fools learn from experience. I prefer to learn from the experience of others." -- Otto von Bismarck)
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